WHICH ANCIENT CITY IS CONSIDERED THE OLDEST IN THE WORLD?

摘要

TODAY, ABOUT 4 billion people - more than half the world's population -reside in urban settings. But urban life began some 6,000 years ago, when tens of thousands of people first crammed together in one place. Which ancient city rose first? Cities began popping up in the Indus Valley of present-day Pakistan and India more than 4,000 years ago, in China over 3,000 years back, and in Central America in the centuries straddling 1 B.C. and A.D. 1.