What is the course of the establishment and development of Babylon?

Robertson pointed out that in Babylon, as in Egypt, the country was unified under one city-state at first, and then under another city-state, which led the priests to try to arrange the gods of each city in different levels of temples. When Babylon became the ruling city, its god Duke blended the rituals and myths of other gods. Indeed, Babylon was founded on the basis of Sumer-Akkad, and it declined after two booms.