WORLD CIVILIZATION

Detailed explanation-1: -The confluence of the Tigris and Euphrates rivers was the place where some of the first civilisations emerged. From ancient times empires arose and fell in the river basin, including Sumer, Akkad, Babylonia, Assyria, and the Abbasid Caliphate.

Detailed explanation-2: -The Tigris (/ˈtaɪɡrɪs/) is the easternmost of the two great rivers that define Mesopotamia, the other being the Euphrates. The river flows south from the mountains of the Armenian Highlands through the Syrian and Arabian Deserts, and empties into the Persian Gulf.

Detailed explanation-3: -EUPHRATES was a river-god of Assyria in west Asia (modern Turkey and Iraq). The river Euphrates flowed south from the highlands of eastern Anatolia through the heart of Assyria. Other important rivers of the east were the Tigris of Assyria, Orontes of Syria, and the Ganges and Hydaspes of India.

Detailed explanation-4: -More than half of the Tigris can be found in Iraq. Other rivers that flow into it include the Greater Zab, the Lesser Zab, the Al-Adhaim, the Diyala, and the Karkheh. While the local population uses the Tigris as a source of fresh water, agriculture is the primary focus for the people near the river.

Detailed explanation-5: -Surrounded by four countries (Iran, Iraq, Turkey, and Syria), the Tigris River is the second largest river in western Asia. With the Euphrates, it makes up a river system that borders Mesopotamia in the area known as the Fertile Crescent.