Cities without kings: what Harappa suggests, and why it vanished

Lesson A ended with a hard fact: we have the streets, the drains, the bricks and the seals of the Indus civilization, but we cannot read a single sentence it wrote. This lesson builds on that silence. It asks two questions. First, what kind of society built these cities, and why do we find no obvious kings? Second, why did the great cities fade away? Both questions must be answered from objects and ruins alone. That makes them a perfect training ground for thinking like a historian. Begin with the dates, because everything else depends on them. Historians divide the Harappan story into phases. An early phase runs from roughly 3300 or 2600 BCE, depending on the region and the scholar. The mature phase, when the big cities flourished, is dated to about 2600 to 1900 BCE. A late phase, often called post-urban, runs from about 1900 to 1300 BCE. The letters BCE mean "before the common era." They count years backward from the year 1, so a larger number means longer ago. These dates are estimates. They come mostly from radiocarbon dating, a method that measures a form of carbon in burned wood or seeds to estimate their age, and from comparing styles of pottery. Different sites give slightly different results, so the boundaries are approximate. At its height the civilization covered a huge area. It stretched across modern Pakistan and northwest India, including Sindh, Punjab, Haryana, Rajasthan and Gujarat. It even had a trading outpost at Shortugai, in northern Afghanistan, near sources of the blue stone lapis lazuli. Its major sites include Mohenjo-daro, Harappa, Dholavira, Rakhigarhi, Ganweriwala and Lothal. The area was larger than either Egypt or Mesopotamia in the same period. That fact matters. A society this big and this uniform needed some form of coordination. The question is what kind. To see why the question is puzzling, compare the Indus with its neighbors. In Egypt, at the same time, kings called pharaohs built pyramids as tombs. These were enormous stone monuments, and the burials inside held gold and treasure. In Mesopotamia, the land between the Tigris and Euphrates rivers, rulers built palaces and temples and carved their victories on stone. A king like Sargon of Akkad, who lived around 2300 BCE, is known to us by name, with his conquests recorded in inscriptions. An inscription is a text cut into stone, metal or clay. Royal inscriptions boast of power. In the Indus cities we find none that we can read, and we find no victory scenes at all. This absence is the starting point for a famous puzzle. Excavators have found no unmistakable royal tomb at any Indus site. They have found no clear palace. They have found no monumental temple of the kind that dominates Mesopotamian cities. Burials are generally modest. A typical grave holds a body, some pottery, and perhaps ornaments such as bangles or beads. There is no extreme gap between the richest and poorest graves, as there is in Egypt or in the royal graves of Ur, a Mesopotamian city. There is also little sign of large-scale warfare. Weapons are few. Archaeologists have not found the burned and rebuilt layers that usually mark a conquered city. Even the fortification walls around some cities may have served against floods or to control trade, not only to repel armies. That is a guess, and scholars debate it. Be careful here. The absence of evidence is not proof of absence. Historians must always ask whether something is missing because it never existed, or because we have not found it, or because we do not recognize it. Excavation has uncovered only parts of the big cities. Mohenjo-daro, for example, has never been fully dug. The high water table, which is the underground level of water, now threatens the lower layers, and salts in the ground damage the bricks. So some evidence may still lie buried or may have been lost. And the script, which might name rulers, remains unread. A king may have existed whose symbols of power we simply cannot recognize. Now consider what we can see. The cities show astonishing planning. Streets at Mohenjo-daro and elsewhere run in a rough grid pattern, with main roads crossing at right angles. Houses were built of baked brick, which is clay shaped and fired in a kiln so that it becomes hard. The bricks were highly standardized. Their length, width and thickness followed a ratio of about 1 to 2 to 4. That means a brick was twice as wide as it was thick, and four times as long. Bricks of this proportion appear across hundreds of kilometers. Standardization means making things to a common size or measure, and it suggests shared rules or shared teaching of craft skills. The same pattern appears in weights. Archaeologists have found many small cubical weights of chert, a hard stone, across Indus sites. They follow a regular series, with each weight a multiple of a base unit. Merchants could therefore weigh goods the same way in distant cities. This points to organized trade and some means of enforcing honest measure. We do not know who enforced it. Water management was another remarkable feature. Many houses had their own wells and private bathing rooms. Waste water ran from houses into covered drains along the streets. These drains had inspection holes, where workers could clean them. This level of sanitation was unusual in the ancient world. Someone planned it and someone maintained it. That requires a form of authority, even if we cannot say whether it was a king, a council, or something else. Two famous features of Mohenjo-daro are often cited in this debate. The first is the Great Bath. It is a large rectangular pool, lined with fine brickwork and sealed with a waterproof layer of bitumen, a natural tar. It sits on a raised mound, often called the citadel. The early excavators, including John Marshall, whose team published the main report in 1931, guessed it was used for ritual bathing. That is a reasonable guess, because later South Asian religions place great importance on ritual washing. But it remains a guess. No inscription tells us its purpose. The second feature is the citadel itself. A citadel is a raised, often walled, part of a city. In other ancient societies, citadels held palaces or temples. At Mohenjo-daro the citadel held large buildings, including the Great Bath and a big structure once called a granary. Even that "granary" label is doubted by many scholars today. So the citadel suggests some form of public or shared life, but not obviously a royal one. Another object shows how easily names mislead. In 1927, excavators at Mohenjo-daro found a small stone statue of a bearded man. He wears a band on his head and a robe decorated with a pattern of trefoils, which are three-lobed shapes. The excavators nicknamed him the Priest-King. The name stuck, and it appears in many books. But there is no evidence that he was either a priest or a king. The nickname reflects what the early excavators expected to find, because they were thinking of Mesopotamia. This is a useful lesson about historical method. A name given by modern people can quietly turn a guess into what looks like a fact. Good historians keep asking what the evidence actually shows. So what kind of society was it? Scholars offer several answers, and the serious ones deserve fair treatment. The first position is that there was a state ruled by kings or kings-like leaders, whose symbols we cannot read. A state, in the historian's sense, is a political organization with institutions that make decisions, collect resources and enforce rules over a territory. Supporters of this view point to the uniformity of bricks, weights and seals over such a vast area. They argue that this level of order is hard to explain without a central power. They also note that the script is unread, and royal titles may be among its signs. This is a reasonable argument, but it relies on something we cannot check. A second position is that power was shared among several groups. The American archaeologist Gregory Possehl suggested that Indus society may have been run by multiple elites, or perhaps by a corporate or merchant-led order. Corporate here means a group acting together as a body, not a single ruler. Jonathan Mark Kenoyer, who has worked for decades at Harappa, stresses a similar picture. He sees several competing elite groups, whose power rested on ritual knowledge, craft control and trade, not on a single dynasty. A dynasty is a line of rulers from the same family. In this view, wealthy merchants, powerful kin groups, and ritual specialists might each have held a share of authority. A third position uses a term worth learning. Rita Wright and others describe the Indus world as a heterarchy. A hierarchy is a system arranged like a pyramid, with one ruler at the top and ranks below. A heterarchy is a system with many centers of power, none fully above the others, and relationships that can shift. Supporters of this view point out that the Indus had several large cities of comparable size, such as Mohenjo-daro, Harappa, Ganweriwala, Rakhigarhi and Dholavira. No single city clearly dominated the rest. Each may have had its own leadership, linked to the others by trade, kinship and shared customs. It is tempting to turn this into a happy story of an equal society without rulers. The evidence does not support that. There were differences in house size, with some large houses and many small ones. There were differences in ornaments, with some people buried or living with rich materials such as carnelian, gold and faience. Faience is a glass-like material made by heating ground quartz, and it was used for beads. Craft specialization was strong. This means that certain people spent their working lives on a single skill, such as bead-making or metalworking. At Harappa and at Chanhu-daro, workshops show that craftspeople made huge numbers of beads. Specialization usually brings differences in wealth and status. So the Indus cities were not utopias. They were unequal societies that expressed inequality in ways quite different from Egypt or Mesopotamia. Violence was not absent either. Here an old error needs correcting. In the 1940s, the British archaeologist Mortimer Wheeler argued that the Indus cities were destroyed by invaders. He pointed to skeletons found in the upper layers of Mohenjo-daro, some lying in streets and houses, and linked them to the Rigveda. The Rigveda is a collection of ancient hymns in Sanskrit, composed in the second millennium BCE and passed on orally. It mentions forts and conflict, and Wheeler suggested it described Aryan invaders destroying the cities. Later scholars looked again. The skeletons came from different layers, so they belonged to different times, not one massacre. Some were not even from the period of the city's end. The invasion theory is now rejected by mainstream scholars. Still, violence did exist. A study of skeletons from the Harappa cemetery by Robbins Schug and colleagues found signs of injuries caused by other people, especially in the later phase of the city. So conflict grew, perhaps as pressures increased. But it was not a story of conquest. We have one more outside clue, and it comes from Mesopotamian texts. Cuneiform, the wedge-shaped writing used on clay tablets in Mesopotamia, records trade with a distant land called Meluhha. Most historians identify Meluhha with the Indus region, though some uncertainty remains. The texts list goods such as carnelian, ivory, and wood. Meluhha even appears in a few records as a place where a community of its people lived in Mesopotamia. Indus-style seals and weights have been found in Mesopotamian cities such as Ur. This tells us that the Indus civilization was connected to the wider world. It also shows us the one thing we have from outsiders: they saw the Indus as a trading land. They do not mention a king of Meluhha in a way that we can confidently use. That is another small clue, and another reminder of its limits. So the first half of the puzzle has an honest answer. We do not know how the Indus cities were governed. The evidence is consistent with several possibilities, and the choice among them depends on how much weight one gives to what is missing. Reading the absence of palaces as proof of no kings is a risk. Reading the uniformity of the cities as proof of kings is also a risk. A careful historian holds both ideas and waits for new evidence. Now turn to the second question. Why did the cities fade? The word "vanished" in the title is misleading, and it needs fixing at once. The civilization did not disappear overnight, and its people did not die out. What changed was the urban system. Around 1900 BCE, the large cities began to shrink. Over the following centuries, the signs of the mature civilization faded. Writing on seals disappeared. Standardized weights went out of use. Long-distance trade declined. The grid-planned streets and drainage systems were no longer maintained. Meanwhile, people lived on in smaller villages, often with different pottery styles and a wider mix of crops. This is why the later phase is called post-urban. It means after the time of cities. The process was gradual and uneven. Some places declined early, while others held on or even grew. In Gujarat, some settlements continued to flourish for a time. In the Punjab and Haryana, and further east into the upper Ganges plain, the number of small settlements increased. So the population did not vanish. It moved. This fact immediately weakens any theory of a sudden catastrophe, because a catastrophe does not usually produce migration to new farming villages over centuries. No single cause of the decline has been proven. Historians propose several, and most now think a combination of causes is likely. The first and most discussed is climate change. Records from lake sediments, cave formations and ocean cores suggest that the monsoon, the seasonal wind that brings heavy summer rain to South Asia, weakened from about 2200 BCE onward. Some scholars link this to a wider event known as the 4.2 kiloyear event, a period of drought felt in several parts of the world around 4,200 years ago. A speleothem is a mineral formation in a cave, such as a stalagmite. Its layers record changes in rainfall over time, and scientists read them like tree rings. The evidence for a drier period is fairly strong. But scholars debate how strongly it affected the Indus region, and exactly when. Climate records are broad, while human decisions are local. A drier climate does not automatically destroy cities. It may make farming harder and force people to adapt. The second proposal concerns rivers. The Indus civilization depended on rivers for water, farming and transport. Many Harappan sites lie along a dry riverbed called the Ghaggar-Hakra, which runs through Haryana, Rajasthan and Pakistan. Some scholars identify it with the Sarasvati, a great river praised in the Rigveda. This identification is contested, and it is politically sensitive in modern India, where debates about ancient history can connect to debates about national identity. The Rigveda describes the Sarasvati as mighty, but the river in the text may not be the same as the Ghaggar-Hakra, and scholars disagree. What is clearer is the geology. In 2012, Liviu Giosan and colleagues published a study arguing that the Ghaggar-Hakra was fed by monsoon rains, not by glaciers in the Himalayas. If so, a weaker monsoon would have dried it. Without a steady river, farming near it would fail. People may have moved toward better-watered land to the east and south. Other researchers dispute details of this study, including how the river behaved and when it dried. So the river theory is plausible, but not settled. Third, flooding. Early scholars proposed that great floods destroyed Mohenjo-daro. Layers of silt, which is fine soil carried by water, were found in parts of the city. But the evidence is limited, and silt can have other explanations. Floods surely troubled the cities, since they stood on river plains. But a flood alone does not explain the decline across such a huge region. Fourth, trade. The cities of the Indus traded with Mesopotamia and the Gulf. After about 1900 BCE, the evidence for this contact fades. If Indus craftspeople depended on distant markets, the loss of those markets could have hurt them. But this raises a question of cause and effect. Did the Indus decline because trade collapsed, or did trade collapse because the Indus declined? Mesopotamia was also changing in these centuries. The answer may be that both were true, and each weakened the other. Fifth, disease and social stress. Evidence of tuberculosis and leprosy has been found in skeletons from Harappa-era sites. Crowded cities with trade routes are good places for infections to spread. But the evidence shows only that these diseases existed. It does not show an epidemic that ended the cities. This idea remains speculation. The same is true of the idea that rising inequality and conflict weakened trust in the system. The increase in violence at Harappa fits this idea, but it is only a hint. The last proposal is invasion, and as we saw, mainstream scholars have abandoned it. There is no evidence of a conquering army, no layer of destruction across the region, and no clear sign of a sudden arrival of outsiders at the time the cities declined. What, then, is the most reasonable picture? Many historians describe a chain of pressures, not a single blow. A weaker monsoon and changing rivers made farming less reliable in some areas. A city depends on surplus food, which is food beyond what farmers need for themselves. If surpluses shrank, supporting large urban populations and specialist workers became harder. Trade routes weakened. People moved to smaller communities where they could grow food more safely, often using several crops that suited different seasons. This adaptation may have been wise. It meant the people survived, even though the cities did not. Seen this way, the end of the cities was not a failure of the people but a change in how they chose to live. This brings us to the question of what happened to the people. Here modern science has added a new kind of evidence. Ancient DNA is genetic material recovered from old bones. In 2019, a team led by Vasant Shinde published results from a skeleton found at Rakhigarhi, one of the largest Indus cities, in Haryana. In the same year, a larger study led by Vagheesh Narasimhan analyzed many individuals from South and Central Asia. The Rakhigarhi individual, and a small group of others linked to the Indus, showed a mixture of two ancestries. One was related to early farmers of Iran. The other was related to local South Asian hunter-gatherers. Importantly, they did not show Steppe ancestry. This is ancestry linked to herding peoples of the Eurasian grasslands north of the Black and Caspian seas. Steppe ancestry appears in South Asia later, during the second millennium BCE. This helps show that the Indus population was not simply replaced by newcomers at the time its cities faded. Be careful, though. The number of individuals studied is small. DNA tells us about ancestry, not language, culture or religion. That caution leads into a difficult debate. Many scholars think that Indo-Aryan languages, the family that includes Sanskrit, reached South Asia with migrating groups from the north during the second millennium BCE. Others, mostly in India, argue that these languages were native to the region and may even have been spoken in the Indus cities. The genetic evidence is often used by both sides. Most specialists in linguistics and genetics support the migration view, but the topic is entangled with modern identity and politics, and scholars of good faith continue to argue. What we can say safely is this. The Indus script is unread, so we do not know what language the Harappans spoke. Some propose a Dravidian language, the family that includes Tamil, some propose others, and some think several languages were spoken. Without a readable text, this stays open. A last point connects both halves of the lesson. The Harappans left a legacy even if their cities faded. Later South Asian societies used similar weights in some regions, and some craft traditions, such as bead-making and pottery forms, continued. Certain symbols and practices may have survived, but the evidence is hard to prove and often argued about. Historians are careful not to draw straight lines from the Indus to later India without evidence. Continuity is possible, but it must be shown, not assumed. The lesson of Harappa is also a lesson about method. We have a civilization that built remarkable cities, managed water, standardized its goods, and traded across thousands of kilometers, yet left no readable account of its rulers or its beliefs. In place of names and battles, we have bricks, drains, beads and weights. From these we must reason carefully. We should not invent kings because other cultures had them. We should not invent a peaceful paradise because we do not find palaces. And we should not choose one cause of decline because it makes a tidy story. The honest answer is often "we do not know yet," followed by a clear account of what the evidence allows. This lesson also shows how a society can change without being destroyed. The Harappan cities faded, but people carried on, adapting to a drier land. That pattern, of cities rising on the strength of rivers and rain and then shifting when conditions change, appears again and again in world history. In our next lessons, we move west and look at the civilizations that left us the very thing the Indus did not: writing we can read. In Mesopotamia and Egypt, kings speak to us in their own words, and we can compare their world with the quiet cities of the Indus.