What led to the emergence of the city of Mesopotamia?

The city of Mesopotamia does not exist. Mesopotamia is a region in the Middle East. It has a rich history and culture. At different times, the kingdoms of Sumer, Akkad, Babylonia, Assyria existed there. These kingdoms arose there due to the natural and climatic conditions of the area. It’s warm there. The deep rivers Tigris and Euphrates flow through the lands of this region. Their fertile valleys were conducive to the growth of plants. People came to a producing economy and mastered agriculture in the valleys of these rivers. People mastered hydro-reclamation. Population growth began and cities began to emerge instead of villages. Example: the city of Uruk.