was located in Northeast Africa just south of Ancient Egypt. The main cities of Kush were situated along the Nile River, the White Nile River, and the Blue Nile River. Today, the land of Kush is the country of Sudan. How long did the Kingdom of Kush rule? The Kingdom of Kush lasted for over 1400 years. It was first established around 1070 BCE when it gained its independence from Egypt. It quickly became a major power in Northeast Africa. In 727 BCE, Kush took control of Egypt and ruled until the Assyrians arrived. The empire began to weaken after Rome conquered Egypt and eventually collapsed sometime in the 300s CE.