I think it was 640 B.C.
hope it helps
A) cities were separated by categories such as class, race, and ethnicity
Answer:
D can be confirmed as correct answer
Explanation:
The correct answer is - the Fertile Crescent.
From what is discovered so far, the place where the first agricultural communities appeared and people started to settle permanently and develop as a civilization, is the so called Fertile Crescent in the Middle East. The fertile Crescent was located between and around (in very close proximity) the rivers of Tigris and Euphrates.