Where did the water that was used to irrigate southern mesopotamia come from?

Tigris and Euphrates Rivers in southern Mesopotamia, today's southern Iraq.

he believed that congress would be better not dealing with "lobbyists", or people who seek to influence (a politician or public official) on an issue, since historically, they had problems with these kinds of people. he thought lobbying produces benefits, but should be carefully monitored.

i beleive that d is the right answer