Answer: Jefferson expanded presidential power by buying the Louisiana Territory for 15 Million from France. He sent Meriwether Lewis and William Clark along with other men to explore the new territory. They called themselves the Corp of DIscovery.
Step-by-step explanation:
What they earned from the expedition:
- Made peaceful relations with Native Americans
- Brought back many plant and animal species
- Discovered the Northwest Passage did not exist
- Went to the Pacific Ocean
- Established a fort called Fort Clatsop