Cities

WHETHER you think the human story begins in a garden in Mesopotamia known as Eden, or more prosaically on the savannahs of present-day east Africa, it is clear that Homo sapiens did not start life as an urban creature. Man's habitat at the outset was dominated by the need to find food, and hunting and foraging were rural pursuits. Not until the end of the last ice age, around 11,000 years ago, did he start building anything that might be called a village, and by that time man had been around for about 120,000 years. It took another six millennia, to the days of classical antiquity, for cities of more than 100,000 people to develop. Even in 1800 only 3% of the world's population lived in cities. Sometime in the next few months, though, that proportion will pass the 50% mark, if it has not done so already. Wisely or not, Homo sapiens has become Homo urbanus.
In terms of human history this may seem a welcome development. It would be contentious to say that nothing of consequence has ever come out of the countryside. The wheel was presumably a rural invention. Even city-dwellers need bread as well as circuses. And if Dr Johnson and Shelley were right to say that poets are the true legislators of mankind, then all those hills and lakes and other rural delights must be given credit for inspiring them.
But the rural contribution to human progress seems slight compared with the urban one. Cities' development is synonymous with human development. The first villages came with the emergence of agriculture and the domestication of animals: people no longer had to wander as they hunted and gathered but could instead draw together in settlements, allowing some to develop particular skills and all to live in greater safety from predators. After a while the farmers could produce surpluses, at least in good times, and the various products of the villagers—grain, meat, cloth, pots—could be exchanged. Around 2000BC metal tokens, the forerunners of coins, were produced as receipts for quantities of grain placed in granaries. Not coincidentally, cities began to take shape at about the same time.
They did so, first, in the Fertile Crescent, the sweep of productive land that ran through Iraq, Syria, Jordan and Palestine, from which Jericho, Ur, Nineveh and Babylon (pictured above) would emerge. In time came other cities in other places: Harappa and Mohenjodaro in the Indus valley, Memphis and Thebes in Egypt, Yin and Shang cities in China, Mycenae in Greece, Knossos in Crete, Ugarit in Syria and, most spectacularly, Rome, the first great metropolis, which boasted, at its zenith in the third century AD, a population of more than 1m people.