সঠিক উত্তর হচ্ছে: ইরাক
ব্যাখ্যা: History of Mesopotamia, history of the region in southwestern Asia where the world’s earliest civilization developed. The name comes from a Greek word meaning “between rivers,” referring to the land between the Tigris and Euphrates rivers, but the region can be broadly defined to include the area that is now eastern Syria, southeastern Turkey, and most of Iraq. Source: britannica.com