Napoleon's troops scored a victory against Egypt's military rulers, the Mamluks, at the Battle of the Pyramids in 1798. ... Geography played a very important role in Napoleon's invasion of Russia in 1812. Russia's severe winter weather helped destroy his Grand army
Answer is b because it separates the desert and the savana
The type of government was based on the idea people can govern themselves is Democracy.
Louisiana Purchase happened in 1803, specifically, July 04, 1803. (but the celebration of July 4 remembers this day in 1776, not 1803)
Gadsden Purchase - December 30, 1853.
The difference is a round 50 years, and more specifically 50 years, 5 months and 26 days!
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