What was the goal for the corps of discovery?

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.