How were ancient greek city states diffrent from modern u. s states

It was because the city states are bigger than modern states or cities but back then they had different things from this time

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !