What is the reason for the nile river?

The Nile River helped Egypt develop civilization.

Jump to Why does the Nile not flood now ? · The River Nile flooded every year between June and September, in a season the Egyptians called akhet - the inundation. Melting snow and heavy summer rain in the Ethiopian Mountains sent a torrent of water causing the banks of the River Nile in Egypt to overflow on the flat desert land.
Hope it's correct

Ghana, first of the great medieval trading empires of western africa (fl. 7th–13th century). it was situated between the sahara and the headwaters of the sénégal and niger rivers, in an area that now comprises southeastern mauritania and part of mali.

What are the statements?