Shorten this some and make it less complicated and reword it

Egypt and Kush were close because they lived by the Nile and traded stuff. They helped each other with culture and money, but also fought for land and power. Sometimes Egypt ruled Kush, and sometimes Kush ruled Egypt. They both wanted to be the ones to have control of the Nile.

Egypt and Kush had a close relationship due to their proximity along the Nile. They engaged in trade, shared cultural exchange, and supported each other financially. However, they also had clashes over land and power, resulting in periods where one ruled over the other. Both Egypt and Kush desired control of the Nile.

Less complicated

Egypt and Kush had a close relationship because they lived near the Nile and traded with each other. They exchanged culture and money, but also fought over land and power. Sometimes Egypt ruled over Kush, and sometimes Kush ruled over Egypt. Both wanted control of the Nile.

Egypt and Kush had a strong connection due to their proximity to the Nile and their trading activities. They interacted culturally and economically, but also engaged in conflicts over territory and authority. These conflicts occasionally resulted in either Egypt or Kush ruling over the other. Both civilizations competed for control over the Nile.