What describes how people in mesopatamia lived before city states were developed

Before the formation of city states, Mesopotamians were nomadic tribes who moved around following the herds of animals. They survived off the land and the wild grains and other things they could find. Essentially, they were like the European Native Americans.

chlorofluorocarbons are released via: aerosol sprays and refrigerants.

lincoln declared that slavery should not be allowed to spread into the new states, and of course this angered the south at the time.