Mitanni (mĭtănˈē) [key], ancient kingdom established in the 2d millennium B.C. in NW Mesopotamia. It was founded by Aryans but was later made up predominantly of Hurrians. Washshukanni was its capital. Mitanni controlled Assyria for a period and was engaged in military efforts to hold back Egyptian forces intent on conquering Syria. In c.1450 B.C. the army of Thutmose III of Egypt successfully advanced as far as the Euphrates; the king of Mitanni surrendered, sending tribute to Egypt, which halted its invasion. Friendly relations later developed between the two powers as evidenced by correspondence between King Tushratta of Mitanni and Amenhotep III of Egypt. In the 14th cent. B.C., Mitanni became involved in struggles with the Hittites and c.1335 fell to the Hittites as well as to resurgent Assyrian forces.
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