The Louisiana Purchase doubled the size of the United States, reshaping the environmental and economic makeup of the country.
Jefferson confronted questions of presidential authority in deciding whether or not to acquire the territory, since the US Constitution does not explicitly give the president the power to purchase territory.
Due to geopolitical reasons, most of emigration out of Africa and Middle East have been to the Western Hemisphere; instead of the East. Adding the original native Americans in the Americas, the Western Hemisphere is currently much more diverse than the East.
