Although located between the Tigris and Euphrates rivers, there was almost no rainfall in the hot and dry climate of Sumer. How were people able to water their
crops?
I

Irrigation

Explanation:

I am fairly sure the Sumerians Invented Irrigation, they dug ditches to there fields. These ditches also stored water for periods of time because the ground below them was already filled with water.

very positive impact on our industries in the west, sine they promoted settlement and increased the ways in which goods could be transported to market.  

a direct vote in which an entire electorate is invited to vote on a particular proposal. this may result in the adoption of a new law.