How do the Tigris and Euphrates Rivers contribute to Iraq’s economy today?

Waterwheel, Ḥamāh, Syria, similar to those long used for irrigation in the Tigris-Euphrates region. In Iraq most of those crops depend on irrigation, which can be applied in three ways: by flow from rivers and canals through small channels, by lifting with wheels or pumps into channels, and by direct inundation.

President Calvin Coolidge was not that known as a presidential figure compared to JFK and other significant presidents. He seemed to have rundown the economy, which is not a great thing, especially if you decide to run a country.