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 历史到了特定时刻，其他区域的城邦不断涌现：印度河河谷的哈拉帕和摩罕达约、埃及的孟斐斯和底比斯、中国的殷商古城、希腊的迈锡尼、克利特岛的克诺萨斯、叙利亚的乌加列，还有最蔚为富丽的伟大都城罗马，在公元3实际的鼎盛时期，其自夸拥有超过一百万的人口。
