1. Explore the Missouri River to its source, cross the
Rocky Mountains, and seek a westward-flowing river
to the Pacific Ocean—the fabled Northwest Passage.
2. Report on new animals, plants, minerals, etc. in
the newly-acquired regions.
3. Establish trade with the Native American tribes
they encountered.
4. Assure the Native Americans of the peaceful
intentions of the United States government.
Answer:
the Soviet Union they defeat United States
So that railroad companies could build railroads, expanding travel across one's country.
Answer:
The Cold War was a nearly 50-year-long political, ideological, and military struggle for global power that was waged between the United States and the Soviet Union. From the end of World War II until the early 1990s, the Cold War was the United States' preeminent international concern, directing all of the nation's major foreign policy decisions.