What happens once a year when the snow on the mountain tops melts and flows down the mountain into the nile river serving as one of the major contributions of the nile river?

When the snow melts on the mountain ranges it sent a torrent of water causing the banks of River Nile to flood.

Explanation:

The river Nile floods the flat land in Egypt . The floods are controlled by Aswan  dam.

The River Nile is the longest river of the world. Only 22% of it passes through Egypt.

letter a is the answer

during world war ii