The Tigris and Euphrates Rivers are exotic because the precipitation in the area they flow through is not sufficient to support their flows. They are fed by shallow lakes, marshes, etc.
Mesopotamia has two rivers, the Tigris and the Euphrates.
The Tigris and Euphrates rivers
The Tigris, the Euphrates, the Diyala and the Khasa are the main ones.
Exotic Rivers are rivers that start out in a really wet region, so they can flow through dry regions
Those two rivers are the Euphrates and Tigris.
Mesopotamia has the Euphrates and Tigris Rivers.
The Tigris and the Euphrates were the main rivers of the fertile crescent
The Tigris and Euphrates Rivers flow into the Persian Gulf.
Tigris and Euphrates Rivers are one of them
The Tigris and Euphrates rivers meet in Iraq.
The Tigris and Euphrates rivers flow into the Persian gulf