The main reason many American Indian groups moved west was to avoid the encroachment of Spanish settlers. escape the imposed system of repartimiento. find more fertile land and better weather for planting. find larger pieces of land for their growing population.

Ithink the answer is b. shakeri hope im not wrong : )

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 !

Where are the following