Paano nabuo ang fertile crescent sa mesopotania o iraq ngayon?

The formation of the Fertile Crescent is a typical alluvial formation. The two large rivers that run relatively parallel have surrounded a piece of land between them before they merge. Both, the Tigris and Euphrates rivers have annual floods. Through this floods, they manage to influence big portion of the lowland area around them. They are depositing each year enormous amounts of fertile deposits, gather along the way with the erosive processes. The accumulation of these fertile deposits has formed very fertile, deep soil, excellent for large scale farming, which was used by the humans that settled there, turned the region into agricultural one, and started to develop a civilization.