Some major events in ancient Mesopotamia include the development of city-states, invention of writing, rise of the world's first empire and establishment of written law. Mesopotamia is often described as a cradle of mankind because it is one of the places where civilization began.
As people began practicing agriculture, they settled into small communities that grew to become city-states. This happened in Mesopotamia between 5000 and 3500 BC. The city-states were started by the Sumerian people who started developing communication in the form of pictograms. This later developed into a cuneiform script.
The first empire in the world sprouts in 2300 BC as King Sargon of Akkard starts expanding his territory. The empire continues to grow until 2220 BC. In 2100 BC, the city of Ur becomes the capital of a great Mesopotamian state. However, the city gradually falls into decline. Mesopotamia later experiences an influx of nomadic communities who eventually overrun it.
As Mesopotamia develops into a government, rulers take up active roles in ensuring that agricultural practices are streamlined and prosperous. The people establish a written code of conduct that each citizen must uphold or face punishment. Warfare was quite common since different communities scrambled over resources such as water and land. This led to the emergence of well-organized armies.