Where did most ancient civilizations form? (physical feature)

So, rather than thinking about different forms of social organization as completely separate There were many features that early civilizations had in common.

Explanation:

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."

which empire had the greatest influence on the history and cultural development of russia?