Where was Babylonia, and what city was it?

Babylonia is usually called the region between the Tigris and Euphrates rivers, which included many Sumerian cities in the south of Mesopotamia. This state was formed at the end of the third millennium and lost its independence during the expansion of the Persian state in the 6th century BC. The center of this formation was the city of Babylon, the ruins of which are located near the Iraqi capital Baghdad. The first finds date back to the 25th century BC. At this time it was a provincial Sumerian city within the Akkadian kingdom. Already the Amorites made it their capital at the beginning of the 2nd millennium.