The famous river in Egypt is called The Nile River.
It is based on the flow of the River Nile which runs from South to North. Upper Egypt is up river and lower Egypt Down river.
The fine soil that was deposited at the mouth of a river in Egypt was called silt.
River Nile
The river Nile.
Nile
Nile river
Lower Egypt isn't called Upper Egypt because the river flows to the north.
The Nile River created Egypt from it's silt (fertile soil) every year the Nile River floods and give silt to what is now called Egypt. The silt has formed Egypt, so if the Nile River was not here then Egypt will not be here today.
Egypt has only one river - the river Nile, the longest river in the world.
Lower Egypt.
This river is named the Nile. It runs 4,000 miles through nearly half of Africa, and is the world's longest river. The Egyptians have a deity for it, who is named Hapi. At the end of the Nile lies the famous delta, and in that delta used to be the city Xios.