Mari

Mari was an ancient Semitic city-state in modern-day Syria. Its remains form a tell 11 kilometers north-west of Abu Kamal on the Euphrates River western bank, some 120 kilometers southeast of Deir ez-Zor. It flourished as a trade center and hegemonic state between 2900 BC and 1759 BC. The city was built in the middle of the Euphrates trade routes between Sumer in the south and the Eblaite kingdom and the Levant in the west.

Mari was first abandoned in the middle of the 26th century BC but was rebuilt and became the capital of a hegemonic East Semitic state before 2500 BC. This second Mari engaged in a long war with its rival Ebla and is known for its strong affinity with Sumerian culture. It was destroyed in the 23rd century BC by the Akkadians, who allowed the city to be rebuilt and appointed a military governor.

Source: Wikipedia