Which region has an abundance of coal, timber and rich farmland but must import some of the oil its people need? A. Region C
B. Region A
C. Region D
D. Region B

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 !