The River Nile flows through the Nile Valley.
The River Nile
The Nile River
The river Nile.
The Nile River Valley.
Because the river Nile flows through it.
The Nile River Valley and the Indus River Valley.
In the Nile Valley region - see the links below.
Danube River Valley
Mainly the Nile River Valley and the Nile River Delta.
They are both rivers
The Nile River Valley was a civilization that started at the northern most peak of the Nile River. Their main economy was largely based on farming, the rich soil being provided by the annual flooding of the Nile River.