Areason the neutrality acts were revised to allow cash-and-carry in the 1930s was because of the spread of socialism. because germany needed supplies. because fascism was gaining ground in europe. because of wwi

The anwser would be 
because fascism was gaining ground in Europe.
hope i helped 

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 !