Answer :
The Tigris River is the second largest river in western Asia and is bounded by four nations: Iran, Iraq, Turkey, and Syria. It forms part of the Fertile Crescent, a river system that borders Mesopotamia along with the Euphrates.
Due to its significance to a predominantly dry region, the Tigris has a long history that goes back to the first known civilizations. It is a significant source of both irrigation and transportation.The river flows parallel to the Euphrates River and has its source in the high mountainous region of Turkey's Lake Hazer. Both rivers eventually merge and drain into the Persian Gulf in the Shatt Al-Arab region of the lowlands. Iraq has more than half of the Tigris River. The Greater Zab, Lesser Zab, Al-Adhaim, Diyala, and Karkheh are some of the other rivers that enter it.The Tigris is primarily used for agriculture, while the local populace also uses it as a source of fresh water. Because of the area's minimal rainfall and hot, dry summers, irrigation is required for crop growth. Although such irrigation can occasionally result in issues with water quality, the Tigris is mostly thought to have acceptable quality.
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