Lewis and Clark, led an expedition to survey the land West of the Mississippi, request of President Thomas
Jefferson. The land that they were exploring was known as Louisiana Territory, that had been purchased from France in
1803. Lewis, Clark and the rest of their expedition began their journey
near St. Louis, Missouri, in May 1804. This group—often called the Corps
of Discovery by historians—faced nearly every obstacle and hardship imaginable on their trip.
It is because they thought that following what others did was like losing their identities.
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There are several ways in which nationalism, imperialism, and militarism helped set the stage for World War I, but it general it made each European country feel that it was superior to the others.
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