The Land Itself

1What the Word "Punjab" Actually Means

Before we can tell the story of a place, we have to agree on what the place is. That turns out to be harder than it sounds.

1.1 — The name is a description

The word Punjab is not a very old word. It is also not, originally, an Indian word. It is Persian.

It is made of two small words joined together:

• Panj — this means "five".
• Aab — this means "water".

Put them together and you get Panj-aab. Five waters. Five rivers.

So the name of the region is not really a name at all. It is a description. It is like calling a town "Three Hills" or "Big Lake". Somebody looked at the land, counted the rivers, and that became what everyone called it.

This tells you something important straight away. The most obvious thing about this place — the thing a stranger notices first, the thing worth putting in the name — is the water.

1.2 — When did people start using this name?

Here is a fact that surprises most people.

The name "Punjab" is only about five hundred years old.

It starts appearing in written records in the 1500s and 1600s, in the time of the Mughal emperors, whose court worked in Persian. Before that, this same land had many other names. In the very old Sanskrit texts it was called Sapta Sindhu — "seven rivers". In Greek writings it was part of a region they called Pentapotamia, which is Greek for, once again, "five rivers".

Notice something. Sanskrit said seven. Persian said five. Greek said five. The number keeps changing.

Why? Because rivers are not fixed things. Some dry up. Some join together. Some split. Whether you count a stream as its own river or as a branch of a bigger one is a judgement call. We will come back to a river that vanished completely in Chapter 4.

1.3 — Which five rivers?

The five rivers, from east to west, are:

All five of them eventually run into one much bigger river: the Indus, called Sindhu in Sanskrit. The Indus then carries all that water down to the sea.

So the five rivers are really five branches of one great river system. Picture a hand. The Indus is the arm. The five rivers are the fingers.

1.4 — Where is Punjab on a map?

This is where it gets complicated, and you need to hold two different answers in your head at once.

The answer for today

Today there is no single Punjab. There are two, in two different countries.

• Punjab, Pakistan. The bigger one, by a long way. Its main city is Lahore. Around 130 million people live there. It is the most powerful province in Pakistan.
• Punjab, India. Much smaller. Its main city is Chandigarh. Around 30 million people live there.

They were split in 1947, when British India was divided into India and Pakistan. A line was drawn straight through the middle of Punjab. We will spend a whole part of this series on how and why that happened, and what it cost.

The answer for history

For almost all of the story in this book, Punjab was much bigger than either of those two places.

At its largest — under Maharaja Ranjit Singh in the early 1800s, and again as a British province — "Punjab" stretched from near the Khyber Pass in the west to near Delhi in the east. It included places that are now completely separate states and provinces: Haryana, Himachal Pradesh, Chandigarh, Delhi's western edge, parts of Khyber Pakhtunkhwa, and Islamabad.

So when a history book says "in Punjab", you have to ask: which Punjab, and in which century?

2The Earth Before Punjab Existed

To understand why Punjab is flat, rich, watered and constantly invaded, you have to go back to a slow-motion crash between two continents. This chapter explains that crash without using a single word you do not already know.

2.1 — First, how old are we talking?

The Earth is about 4,500 million years old. That is four and a half billion years.

That number is useless to your brain. Nobody can feel what a billion years is. So let us shrink it.

2.2 — The ground under your feet is not fixed

This is the single strangest true fact in this chapter, so read it slowly.

The ground moves.

Not in an earthquake. All the time. Every day. Right now.

Here is how it works.

The Earth is not solid all the way through. It is more like a boiled sweet with a soft centre. On the very outside there is a thin, hard, cold shell of rock. Under that shell the rock is hot — hot enough to be soft and slowly bendable, like very thick treacle or warm tar.

That hard outer shell is not one single piece. It is cracked. It is broken into about a dozen enormous pieces, plus a lot of smaller ones. Think of the shell of a boiled egg after you have rolled it on the table — still holding together, but cracked into big plates.

Each of those pieces sits on the hot soft rock underneath. And because the soft rock underneath slowly churns and moves, the hard pieces on top get carried along with it.

How fast do they move? Very slowly. Somewhere between one and ten centimetres a year, depending on the plate.

2.3 — India was once an island

Now the part that concerns us directly.

The land we now call India was not always attached to Asia. Once, it was nowhere near Asia at all.

Around 200 million years ago, most of the world's land was joined into one gigantic super-continent. Scientists call the southern half of it Gondwana. In Gondwana, India was wedged in beside Africa, Madagascar, Antarctica and Australia. Not next to China. Not next to Iran. Down in the south, near where Antarctica is today.

Then Gondwana began to break apart.

Around 130 million years ago, the piece we now call India tore away from the rest and started moving north, on its own, as a giant island. Nothing above it but open ocean.

And it moved fast. Not fast by human standards — but astonishingly fast by continent standards. Around 15 to 20 centimetres a year at its quickest. That is several times faster than most plates move. Geologists still argue about exactly why it was in such a hurry.

2.4 — The slowest crash in history

India kept sailing north for roughly 80 million years.

Ahead of it was the huge landmass of Asia. Between them was an ocean that no longer exists. It had a name: the Tethys Sea. It is gone now, closed up and squeezed out of existence, which is a strange thing to say about an entire ocean.

Then, around 50 million years ago, India arrived. It hit Asia.

Now think carefully about what happens when two continents meet.

When a heavy sheet of ocean floor meets a continent, the heavy one slides underneath and gets swallowed. That is normal, and it happens all over the world. But India was not ocean floor. It was a thick, light slab of continent. So was Asia. Neither one would sink under the other. Neither one would stop. Neither one could get out of the way.

So the land between them had nowhere to go but up.

The rock that got crushed and folded upwards had, in many places, been sitting on the floor of the Tethys Sea. Sea mud. Sea sand. Sea creatures.

That mud was lifted eight kilometres into the sky.

2.5 — Why any of this matters for human history

You might reasonably ask what a 50-million-year-old crash has to do with Guru Nanak or the British.

The answer is: nearly everything. That crash produced four things, and all four run through this entire book.

One: it made a wall. The Himalayas are the highest mountains on Earth. They seal off the north almost completely. For most of history, no army came into India over the Himalayas. That single fact shapes every invasion in the next thirteen parts.

Two: it left doors in the wall. The wall is not complete. In the north-west, where the mountains are lower and broken, there are passes — the Khyber, the Bolan, the Gomal. Almost every invader in Punjab's history walked through one of these. And the land immediately behind those doors, the first place any invader arrives, is Punjab. That is why this region has been fought over more than almost any other on Earth.

Three: it made rain. Explained fully in the next chapter.

Four: it made the soil. Also the next chapter — and it is the most important of the four.

3How the Rivers Made the Soil

This is the most important chapter in Part 1. If you understand this one, you will understand why every empire in South Asia wanted Punjab, and why the trouble in Punjab today is still, at bottom, about water and land.

3.1 — Mountains make rain

Start with a simple fact about air. Warm air can hold a lot of water as invisible vapour. Cold air cannot hold nearly as much.

You have seen this yourself. Take a cold bottle out of the fridge on a warm day and it goes wet on the outside. The water was already in the air, invisible. Touching the cold bottle cooled that air down, the air could no longer hold the water, and the water came out as droplets.

Now do that to a whole sky.

Every summer, the land of South Asia bakes. Hot land heats the air above it. Hot air rises. When air rises it leaves a gap, and air rushes in to fill that gap. The air that rushes in comes off the Indian Ocean — and it is carrying an enormous load of water vapour, because it has spent months sitting on a warm sea.

That wet ocean air sweeps north across the land. Then it hits the Himalayas.

It cannot go through a mountain, so it is forced upwards. And as air rises it cools. And cold air cannot hold water.

So the water falls out. All of it. In sheets.

There is a second water supply too, and people often forget it. The Himalayas are so high that snow sits on them permanently. Every spring and summer, some of that snow and ice melts and runs downhill.

So the mountains do two jobs at once. In the wet months they catch rain. In the dry months they release melt-water. That is why Punjab's rivers do not dry up in the hot season the way rivers in most dry countries do.

3.2 — Water quietly destroys rock

Water is soft. Rock is hard. Water wins.

Not in a day. Over long enough time, water takes mountains apart completely. It does this in several ways at once:

• It freezes. Water seeps into a small crack in a rock. At night it freezes. Water expands when it freezes — which is unusual and very important. The expanding ice pushes the crack wider. Next day it melts, seeps deeper, and freezes again. Do that a few thousand times and the rock splits.
• It carries grit. A fast river is not just water. It is water full of sand and stones. Those act like sandpaper on the river bed, grinding it away.
• It dissolves. Rainwater is very slightly acidic. Some rocks slowly dissolve in it, the way sugar dissolves in tea, only far slower.
• It smashes. In a flood, a river can roll boulders the size of cars. Rocks hitting rocks break both.

3.3 — The rivers carry the mountains away

Here is where it comes together.

The rivers of Punjab start high in the Himalayas. Up there they are steep and violent, ripping rock apart and carrying the pieces downhill.

As the land flattens out, the rivers slow down. And a slow river cannot carry as much. So it starts dropping its load — the big stones first, then the sand, and finally, where it is slowest, the very fine silt.

That silt settles out over the flat land. A thin coating. Then the next flood brings more. Then the next. Then the next.

Now run that for millions of years.

How deep is the pile? In places it goes down more than six kilometres.

Read that again. If you dug straight down in central Punjab, you would have to dig through six kilometres of river-dumped material before you reached solid bedrock. That is deeper than most of the Himalayas are tall.

3.4 — Why flat, deep and fine matters so much

Three properties, and each one is worth a lot.

It is flat. The plain of Punjab is one of the flattest large areas on Earth. You can travel two hundred kilometres and barely change height. Flat land is easy to plough. Flat land is easy to irrigate — water will run wherever you dig a channel. Flat land is easy to build roads across, easy to move carts across, easy to move armies across. Every one of those matters later.

It is deep. In most of the world, soil is a thin skin — half a metre, maybe a metre, then rock. Farm it too hard for a few generations and it is finished. Punjab's soil is not a skin. It is kilometres thick. It can absorb enormous farming pressure and keep producing. This is a big part of why Punjab has been continuously farmed for over four thousand years without collapsing.

It is fine and fresh. Silt is not old worn-out dirt. It is freshly ground-up rock, and ground-up rock carries the minerals plants need. Every flood used to lay down a new coat of fertiliser, free of charge. And because the particles are so fine, the soil holds water instead of letting it drain straight through.

3.5 — The one sentence this whole series rests on

If you take a single sentence out of Part 1, take this one:

Unpack it and you get the whole story in advance:

• Fertile land plus water equals surplus food. More food than the farmers themselves eat.
• Surplus food equals people who are not farmers. If ten farmers can feed fifteen people, then five people are free to do something else: make pots, build walls, keep records, pray, fight.
• People who are not farmers equals cities, priests, kings and armies. This is the recipe for civilisation, and Punjab got one of the world's first.
• Surplus also equals something worth stealing. Nobody marches an army across a desert to rob people who have nothing.
• And it sits behind the open door. Anyone coming into India through the north-western passes arrives in Punjab first — rich, flat, and hard to defend because there is nothing to hide behind.

So Punjab gets both halves of the deal at once. It is one of the wealthiest agricultural regions in the world. It is also one of the most invaded places on Earth. Those two facts are not a coincidence. They are the same fact, seen from two sides.

4The Five Rivers, One by One

Each river has its own character, its own old name, and its own set of famous events on its banks. Learn these five and large chunks of the rest of the series will suddenly make sense.

4.1 — The parent river: the Indus

Before the five, there is the one. The Indus is the river all the others belong to.

It begins in Tibet, near a mountain called Kailash, runs north-west through the high mountains, then swings around and comes down through Pakistan to the Arabian Sea. It is around 3,180 kilometres long.

Its Sanskrit name is Sindhu, which simply means "river" or "big water".

Now follow this chain, because it explains the name of an entire country and one of the world's great religions:

• The people of the land called the river Sindhu.
• The Persians next door could not make the "s" sound at the start of a word in that position, and said Hindu instead.
• To Persians, "Hindu" meant simply the people who live beyond that river. It was a geographical label, not a religion.
• The Greeks took the Persian word and turned it into Indos, then India.
• Centuries later, the word "Hindu" got attached to the religion of those people, and much later still, the people themselves adopted it for their own faith.

So "India" and "Hindu" are the same word, twice borrowed and twice changed, and both of them started out as the name of a river.

4.2 — The Jhelum (old name: Vitasta)

The most westerly of the five. It rises in Kashmir, runs through the Kashmir valley, and comes down into the plains.

Why it matters: in 326 BCE, Alexander the Great fought King Porus on the bank of this river. The Greeks called it the Hydaspes. It is the deepest Alexander ever got into India by fighting, and the battle is one of the most famous in Punjab's history. Part 4 covers it in full.

4.3 — The Chenab (old name: Asikni)

The biggest of the five by the amount of water it carries. It also rises in the mountains of Himachal Pradesh and flows down through Jammu into the plains of Pakistani Punjab.

The name is Persian again: Chan-aab, roughly "moon water". Its Sanskrit name Asikni means "the dark one".

Why it matters: it is the river of Punjabi love-poetry. The story of Sohni and Mahiwal — in which Sohni swims the river each night to meet her lover and drowns when her clay pot is swapped for an unbaked one — is set on the Chenab. When Punjabi folk songs say "the river", they very often mean this one.

4.4 — The Ravi (old names: Parushni, later Iravati)

The smallest of the five. It rises in Himachal Pradesh, runs past Lahore, and joins the Chenab.

Why it matters — enormously, for a small river:

• Lahore stands on it. Lahore has been the capital of Punjab, on and off, for a thousand years — under the Ghaznavids, the Mughals, Ranjit Singh, and the British.
• The very old Sanskrit hymns describe a Battle of the Ten Kings fought on the Parushni. If that memory is real, it is one of the oldest specific events remembered anywhere in South Asia. We look at it properly in Part 3.
• In 1929 the Indian National Congress declared full independence as its goal on the bank of the Ravi at Lahore.

4.5 — The Beas (old name: Vipasha)

Rises in Himachal Pradesh, runs entirely within India today, and joins the Sutlej.

Why it matters: this is the river where Alexander's story ends. After beating Porus, Alexander wanted to keep going east. On the bank of the Beas his soldiers refused. They had been marching for eight years. They had heard there were far larger armies and far larger elephants ahead. They stopped, and Alexander — who had never turned back from anything — turned back.

The Beas is therefore the eastern edge of the ancient Greek world. Not a border anyone drew. A border set by tired men saying no.

4.6 — The Sutlej (old name: Shatadru)

The longest of the five. Like the Indus, it starts in Tibet, near the same holy lake, then cuts through the Himalayas and comes out onto the plains.

Why it matters:

• Its Sanskrit name Shatadru means "flowing in a hundred branches" — a hint that this river has a long history of splitting and changing course. Hold that thought for section 4.8.
• It was the agreed border between Maharaja Ranjit Singh's Sikh Empire and British territory for around forty years. When British troops crossed it in 1845, the Anglo-Sikh Wars began.
• Today it carries some of the most disputed water in South Asia. Who gets Sutlej water — Punjab, Haryana, Rajasthan — is a live political fight that has been running for over fifty years.

4.7 — The land between: doabs

Here is a piece of vocabulary that unlocks a lot of old documents.

Five rivers running roughly parallel create long strips of land between them. Each strip is a doab, and each has a name — usually made by gluing bits of the two river names together.

These were not just geography words. They were administrative units — tax districts, army recruiting areas, canal zones. Mughal and British records are full of them. Amritsar and Lahore are both in the Bari Doab. That is why they were natural rivals and natural partners.

4.8 — The river that disappeared

Now something genuinely strange, which I am flagging here and will settle in Part 2.

Look at a satellite photo of the dry country of Haryana, Rajasthan and Cholistan in Pakistan. You can see the ghost of a very large river bed. Wide. Long. Running roughly parallel to the Indus, down to the sea. And bone dry, except for a seasonal trickle called the Ghaggar in India and the Hakra in Pakistan.

A big river ran there once. Then it stopped.

Now add two more facts:

• The oldest Sanskrit texts describe a mighty river called the Saraswati, and place it roughly in this area. They call it the greatest of rivers. Later texts describe it as disappearing into the sand.
• A large number of Harappan settlements — hundreds of them — sit along this dry channel, not along the Indus.

That combination has produced one of the biggest arguments in South Asian history. It involves geology, archaeology, satellite imaging, ancient poetry and modern politics all at once. It is far too important to squeeze in here.

Full treatment in Part 2, with both sides laid out properly. For now, just carry this: there may have been a sixth river, and it may have died.

5Ice, Heat, and Rivers That Move

The map of Punjab has never held still. Rivers wander. The climate swings between wet and dry. People had to move when the water moved — and cities died when it moved too far.

5.1 — What an ice age actually is

An ice age is not a world of permanent blizzards. It is simply a long stretch — tens of thousands of years — when the Earth is a few degrees colder than usual.

A few degrees does not sound like much. Look what it does.

When the world cools, more snow falls in winter than melts in summer. The leftover snow piles up. Year after year the pile deepens, and the weight compresses the bottom into solid ice. Do that for thousands of years and you get an ice sheet kilometres thick, spreading outwards under its own weight.

Now here is the part people miss. All that water came out of the sea. Water goes sea → cloud → snow → ice sheet, and it stays locked in the ice sheet. So as the ice grows, the sea drops.

5.2 — Punjab during the cold periods

Punjab itself was never buried under an ice sheet. It is too far south and too low. But it changed a great deal.

Colder. Not freezing, but noticeably cooler.

Much drier. This is the key one. A cooler ocean puts less water into the air, which means a weaker monsoon. Weaker monsoon means less rain. Some periods were dry enough that grassland turned to near-desert and sand dunes advanced across land that is farmland today.

Bigger glaciers up top, so different river behaviour. More water locked as ice in the mountains, released in sudden melt surges rather than steady flow.

And then it reversed. Warm periods brought a stronger monsoon, heavier rain, rivers running full, forest and grassland spreading back over the sand.

This swinging happened over and over. Cold-dry, warm-wet, cold-dry, warm-wet.

5.3 — Rivers do not stay where you put them

Now something that will matter more than you expect.

A river on flat land is unstable. Here is why.

A river carrying silt drops some of it on its own bed. So the bed slowly rises. As the bed rises, the river builds up its own banks with silt too. Eventually the river is running along the top of a low ridge that it built itself — higher than the land on either side.

That cannot last. One big flood, the bank breaks, and the water pours out sideways into the lower land beside it. The river abandons its old bed and takes a new route, sometimes tens of kilometres away.

It is a disaster if you happen to live there.

Imagine your town has stood on a river for two hundred years. The wells, the fields, the boats, the trade route, the drinking water — all of it built around a river that is a short walk away. One flood season the river moves fifteen kilometres east.

Your town is still standing. It is simply now in a dry place, and it is finished.

5.4 — Why this is one of the most important ideas in the series

Keep this chapter in your head, because it comes back three separate times:

• Part 2 — the end of the Harappan cities. One of the leading explanations for why the great Indus cities declined is a long dry spell combined with rivers changing course. Not an invasion. Not a war. Just the water moving.
• Part 4 and the "lost river". If the Saraswati was real, the most likely way it died is that its mountain sources were captured by neighbouring rivers, and it slowly starved.
• Every part after that — the fight over water. Punjab's rivers have been diverted, dammed and argued over continuously. Mughal canals. British canal colonies, the biggest engineering scheme in the empire. The Indus Waters Treaty splitting the rivers between India and Pakistan in 1960. The Sutlej-Yamuna Link canal, still unbuilt and still poisoning politics today. The Punjab groundwater crisis right now.

Every one of those is the same story with different clothes on: the water moves, and people fight about it.

6The First People

Somebody was here long before Punjabi, long before Sanskrit, long before anyone had a name for anything. We have their rubbish but not their bodies — and working out how old their rubbish is has caused one of archaeology's longest arguments.

6.1 — Where the oldest evidence is

If you want the earliest human traces in Punjab, you go to a place called the Potohar Plateau. It is in northern Pakistan, between the Indus and the Jhelum, near Rawalpindi and Islamabad.

It is not flat plain. It is rolling, broken country cut through by deep gullies. Running across it is a river called the Soan.

Why here, and not in the rich flat farmland to the south? Two reasons, and the second one is important.

One: the plateau is old, high ground. It was not buried under kilometres of new silt.

Two — and this is the crucial one: the gullies have cut down through the old layers and exposed them. Archaeologists can walk along a gully wall and look at ground that formed hundreds of thousands of years ago.

On the flat plain, that same material is sitting under kilometres of mud where nobody will ever reach it.

6.2 — What was found

In the 1930s, two researchers — Hellmut de Terra and Thomas Paterson — surveyed the Soan valley and found large numbers of worked stones. They named the tool style the Soanian culture.

These are not the neat, symmetrical hand-axes you see in museum posters. Soanian tools are simpler:

• Choppers. A river pebble with several flakes knocked off one edge to make a rough cutting edge. Fits in the palm.
• Chopping tools. The same idea, worked from both sides.
• Flakes. The sharp pieces knocked off, used as small blades.
• Scrapers. Flakes with a blunted edge, for cleaning hides or working wood.

The raw material is almost always quartzite pebbles from the river gravels — hard, and it fractures with a sharp edge.

6.3 — How do you tell a tool from a broken rock?

Fair question, and it is the heart of the argument coming up in 6.4. A river bashes rocks together constantly. Rocks split in frost. Rocks fall off cliffs. Any of that can leave a sharp-edged rock.

So how does anyone claim a particular stone was shaped by a person?

6.4 — The big argument: how old is all this?

Here is where it gets heated.

6.5 — Who were they?

Almost certainly not people like us.

At the time these earliest tools were made, our own species — Homo sapiens — did not exist yet. We appear roughly 300,000 years ago, in Africa.

The most likely toolmaker is an earlier human species called Homo erectus, which spread out of Africa a very long time ago and reached as far as Java and China. Fossils of Homo erectus have been found in Java and in China, and the Punjab region lies on a very plausible route between Africa and both.

Homo erectus stood upright, was roughly our height, had a brain around two-thirds the size of ours, made stone tools, and probably used fire. Not us. But not an ape either. Something in between, and successful — the species lasted well over a million years, which is far longer than ours has managed so far.

6.6 — The missing bodies

Be clear about the size of this gap.

No early human fossil has ever been found in Punjab. Not one skull. Not one thigh bone. Not one tooth.

We have thousands of stone tools and zero people.

Why? Bones are fragile. They need very particular conditions to survive — quick burial, the right chemistry in the soil, no acid, no scavengers, no repeated wetting and drying. In hot, seasonally wet, acidic, river-churned ground, bone dissolves. Stone does not care.

So our picture of these people is built entirely out of what they dropped, not what they were.

7The Long Middle

Between the first crude choppers and the first farmers lies an almost unimaginable stretch of time. Tools got better. Our own species arrived. And a volcano on the other side of the world may — or may not — have nearly wiped everyone out.

7.1 — The scale of the gap

Chapter 6 ended with people making simple choppers. Chapter 8 begins with people planting wheat.

Between those two chapters sits somewhere between several hundred thousand and nearly two million years, depending on which date you accept for the Soanian.

7.2 — Tools slowly get better

Archaeologists divide the Stone Age into three stretches, named for how the tools were made. Ignore the names if you like; the pattern is what matters.

The Middle Palaeolithic jump deserves a moment, because it is bigger than it sounds.

Making a chopper means: hit the rock, get an edge. Making a prepared-core tool means: shape the whole block first, carefully, taking off flakes you do not want, purely so that the final flake — the one you actually wanted all along — comes off in exactly the right shape.

That requires holding a picture of the finished object in your head through a dozen steps that each make things temporarily worse. That is planning. It is the same mental skill as saving money, or building a house from a design.

Punjab has Middle and Upper Palaeolithic material too — on the Potohar terraces, and at Sanghao Cave in the hills to the north-west, where prepared-core tools were found in deep layers inside a cave.

7.3 — Our own species arrives

Homo sapiens — us — appears in Africa around 300,000 years ago. Modern humans spread out of Africa in more than one wave, with the major successful expansion usually placed somewhere between about 70,000 and 50,000 years ago.

Anyone walking from Africa towards Australia or East Asia by a southern coastal route, or by a northern inland route, passes through or near this region. Punjab is not a destination in that story. It is a corridor.

That word — corridor — is worth holding onto. It describes Punjab's position for the next four thousand years just as well as it describes it here.

7.4 — The super-volcano argument

8Farming: The Biggest Change in Human History

Everything in the remaining thirteen parts of this series — kings, temples, taxes, armies, castes, wars, borders — grows out of one change. People stopped chasing food and started growing it.

8.1 — Life before farming

For almost all of human existence, people got food by finding it. Hunting animals. Catching fish. Digging roots. Picking fruit, seeds and nuts.

That life has certain unavoidable rules built into it:

• You must move. Eat everything in one place and you have to walk to the next.
• You must travel light. Everything you own, you carry. So you own almost nothing.
• You cannot store much. Nothing keeps, and you cannot carry it anyway.
• Your group must stay small. A patch of wild land only feeds so many. Groups of twenty to fifty are typical.
• Nobody can get very rich. Wealth is stuff, stuff must be carried, so nobody accumulates much more than anyone else.
• Nobody can boss you very hard. If you dislike the big man in your group, you walk away and join another. That is a real and constant check on power.

That last point is worth pausing on. In a mobile foraging life, permanent bullying is difficult, because the victim's exit is always available. That changes completely with farming, and not for the better.

8.2 — The change begins nearby: Mehrgarh

The earliest farming village we know of in this whole region is not in Punjab. It is just to the west, at the foot of the Bolan Pass in Balochistan, in Pakistan. It is called Mehrgarh.

People were living there from around 7000 BCE — that is roughly nine thousand years ago — and continued for thousands of years.

What was found there:

• Mud-brick houses. Not tents. Not caves. Rectangular buildings with small rooms, some of which look like storage.
• Wheat and barley — cultivated, not wild.
• Goats, sheep and cattle — kept, not hunted. The bones show it: over the centuries the animals get smaller and the age-at-death pattern changes, both classic signs of herding rather than hunting.
• Burials with grave goods — beads, tools, and in some cases animals buried with the dead.
• Teeth with holes drilled in them. Yes, really. Several individuals show neat holes drilled into the biting surface of molars, made with a fine stone drill, almost certainly to treat decay. This is dentistry, around nine thousand years ago, in this region. It is one of the earliest examples anywhere in the world.

8.3 — Where did farming come from?

8.4 — What farming actually did to people

Now the important part. Farming did not just change what people ate. It rebuilt human society from the ground up. Follow the chain slowly — each step causes the next.

Step 1. You must stay put. You planted in spring; you must be there in autumn. So people settle. Permanent villages appear.

Step 2. You can own heavy things. Nobody has to carry anything anymore. So: pots, grindstones, furniture, looms, storage jars. Possessions multiply.

Step 3. You produce a surplus, and you store it. A good harvest gives more than you eat. Grain keeps for months in a sealed jar. This is the hinge of the whole thing.

Step 4. More food means more children. Foragers space births widely — you cannot carry two babies. Settled farmers do not have that limit, and grain can be mashed to feed an infant early. Populations grow, slowly at first, then fast.

Step 5. Some people stop farming. If ten farmers grow enough for fifteen, five people are free. Those five become potters, weavers, builders, priests, record-keepers, soldiers. This is where every specialised job in history comes from.

Step 6. Stored grain must be guarded — and guarding turns into ruling. A full granary is worth stealing. So you need protection. The people who protect the store end up controlling the store. Control of the store is control of everybody who needs to eat from it.

Step 7. Inequality becomes permanent. Land can be owned. Land can be inherited. Grain can be lent at interest. Now some families are permanently richer than others, and their children start ahead. And unlike a foraging camp, you cannot walk away — your fields are here, and the next valley belongs to someone else.

Step 8. Writing. Somebody has to keep track of who owes what. The earliest writing anywhere in the world is not poetry or prayer. It is accounts — lists of grain, animals and debts.

Step 9. Cities, kings, armies, taxes, empires. All of it grows out of step 3.

8.5 — Was farming actually a good idea?

9At the Door of the First Cities

Part 1 ends just before the curtain goes up. Here is the last stretch of ground, and what is waiting on the other side of it.

9.1 — Farming spreads onto the plains

After Mehrgarh, farming villages begin appearing east and north — down out of the hills and onto the great flat plain we spent Chapter 3 building.

Archaeologists find them by their pottery. Different groups made pots in different styles, and pottery is nearly indestructible, so broken pot fragments are the main way early villages are identified and dated.

One early style found across Punjab, Haryana and Cholistan is called Hakra ware — named after the dry Hakra channel it clusters along. Villages using it date to roughly 4000–3000 BCE. Another well-known early site is Kalibangan in Rajasthan, where archaeologists found something remarkable: a ploughed field, with the furrow marks still visible in the ground, from around 2800 BCE. It is one of the oldest ploughed fields ever found anywhere.

These villages are small — a few hundred people at most. Mud brick, grain storage, cattle, pottery, some copper. Nothing that looks like a city yet.

And then, over a few centuries, something extraordinary happens.

9.2 — What is waiting in Part 2

Those villages grow into one of the first great civilisations on Earth — larger in area than ancient Egypt and Mesopotamia combined.

Cities appear with straight streets laid out on a grid. Standardised bricks, made to the same proportions across hundreds of kilometres. Covered drains running under the streets, with private bathrooms in ordinary houses connected to them — better sanitation than most European cities had four thousand years later. A system of weights so precise and so consistent that it must have been enforced by someone. A writing system that, despite a century of effort, nobody has ever read.

And no palaces. No royal tombs stuffed with gold. No obvious kings. No temples anyone can be sure about. Very little sign of war.

That is Harappa. And roughly seven hundred years after it rose, it came apart, and nobody is certain why.

10An Honest List of What We Do Not Know

Most history books only tell you what is known. That gives a false impression of how solid the picture is. Here is the other half.

Everything in Part 1 sits somewhere on a scale from "certain" to "educated guess". Here is where the gaps are.

Things we genuinely do not know

• Exactly when people first reached Punjab. The range of serious estimates spans well over a million years. That is not a small margin of error.
• Which human species made the earliest tools. Homo erectus is the best guess. We have no bones from Punjab to confirm it.
• What any of these people looked like, spoke, believed, or called themselves. Nothing. Total blank.
• Whether the earliest Riwat "tools" are tools at all. Still contested.
• How many people lived here at any point before farming. Estimates are guesses built on modern comparisons.
• What happened on the plains themselves. Buried under kilometres of silt. Probably permanently out of reach.
• Whether farming reached Punjab by people moving in, by ideas spreading, or both. Probably both, in proportions unknown.
• How much of the coastal early human story is simply drowned. Sea level rose 120 metres. Whatever was on the old coast is under water.

Things that are solid

• The Earth is about 4.5 billion years old, and India collided with Asia around 50 million years ago. Multiple independent methods agree.
• The Himalayas are the product of that collision and are still rising. We measure it directly.
• The Punjab plain is river-deposited sediment, kilometres deep. Confirmed by drilling.
• Humans were in the Potohar region very early — hundreds of thousands of years, at minimum.
• Farming was established at Mehrgarh by around 7000 BCE.
• Zebu cattle were domesticated locally in this region.
• The climate swung repeatedly between wetter and drier. Confirmed by pollen, dunes and cave deposits independently.