Explanation

 The Nile is the primary water source of Egypt, Sudan, and South Sudan

About 90% of Egypt's water supply comes from the Nile, with the remaining 10% from groundwater. 

Egypt is known as the "Gift of the Nile"

Additional information 

The Nile River flows through Northeast Africa

The outflow of the Nile River is into the Mediterranean Sea.

It has an approximate length of 6,650 kilometers (4,132 miles)

The Nile is the longest river in Africa and the world.

The Nile has two major tributaries:

• The White Nile
• The Blue Nile (begins at Lake Tana in Ethiopia)