The steam engine was crucial to Great Britain's Industrial Revolution. The answer to your question is D. I hope that this is the answer that you were looking for and it has helped you.
A.) Northerners and Southerners disagreed over the results of the slavery vote.
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.
