urban revolution वाक्य

He believed that the Urban Revolution was largely caused by the development of bronze metallurgy, and in a 1950 paper proposed ten traits that he believed were present in the oldest cities : they were larger than earlier settlements, they contained full-time craft specialists, the surplus was collected together to a god or king, they witnessed monumental architecture, there was an unequal distribution of social surplus, writing was invented, the sciences developed, naturalistic art developed, trade with foreign areas increased, and the state organisation was based on residence rather than kinship.