The africans countries is home to the worlds largest desert and longest river

The Nile is the worlds longest river at 4,160 miles.  It flows North.

Covering approximately ¼ of the African continent, The Sahara is the world's largest hot desert, coming third to the world's largest deserts:  

(Largest) Antarctica Polar Desert and

(Second Largest) The Arctic Polar Desert.

Explanation:

answer; the above statement is (true);