How Did The Sumerians Conquered The Mesopotamian Empire?

In the third millennium BC the Sumerians conquered the Mesopotamian Empire. They prearranged themselves into self-governing cities. Around the year two thousands three hundred and thirty BC, the Sumerian cities were conquered by King Sargon I and the Akkadian Empire was founded. Around the year two thousand and two hundred BC the Akkadian Empire was conquered and a long period of division started. Around the year one thousand and eight hundred BC, the city of Babylon attained supremacy and founded a lasting empire. The last great dominance corresponded to the Assyrian Empire, which lasted until the sixth century BC, when Mesopotamia was dominated by the Persians.

Most of the buildings in lower Mesopotamia were made of mud brick. They did not have trees for large spaces of stone quarry or metal resources.

Mud brick was made
After some time, the kings united regions and cities which were adjacent in order to extend their wealth and to get more power. Sometimes, they made war to expand their territories. This way kings became very powerful and prospered in forming large empires.
As kings extended their lands, they needed to build a state building that guaranteed their dominance and power. So they selected governors and formed bodies of civil servants. The governors held organizational and military functions in the farthermost provinces, and the civil servants who could inscribe, read and count, were in control of accumulating taxes. In dissimilar places, civil servants were named different names; for instance, mandarins in China, and scribes in Mesopotamia and Egypt.
The relations between the residents grew into more complicated and to control them the first programs of law were created. One example is the program of Hammurabi in Mesopotamia. The necessity for other legal papers also improved, such as contracts, receipts, judgements, wills and many