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It's Mesopotamia, modern day Iraq. Very first of ancient civilizations

Ancient region of southwest Asia between the Tigris and Euphrates rivers Mesopotamia.

What is Euphrates rivers?

The Euphrates rivers are ancient rivers in Asia. The Euphrates River was the longest river in southwest Asia, stretching 1,740 miles (ca. 2,800 km). The past data analysis showed the Euphrates rivers were dry in 2006. The discharge of the river is 356 m3/s. The Euphrates River's basic area was covered by 500,000 km2.

Between the rivers Tigris and Euphrates in ancient Southwest Asia. Mesopotamia means 'country between the rivers.' Mesopotamia is presently in the Middle East.

The region was one of the four civilizations in which writing was invented, and it was home to several historically significant cities.

Hence, the significance of the Euphrates rivers is aforementioned.

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