Answer:
25%
Explanation:
Sand sheets and dunes cover approximately 25 percent of the Sahara's surface.
Is there a book where I can get the information from?
The Austro-Hungarian Empire blamed the entire Serbian country for the death of the Archduke instead of the terrorist group responsible. The Bosnians were close to the Serbs, and both countries took great offense to the blame.
The South and South Asian nations rejected both the U.S. and U.S.S.R policies of expanding the Cold War