Why did president Jefferson sent Lewis and clark on expedition through the Louisiana territory?

President Thomas Jefferson sent Meriwether Lewis and William Clark on their expedition through the Louisiana Territory to explore and map the newly acquired land, assess its resources, and establish trade routes. He aimed to strengthen American claims to the territory, gather scientific knowledge about its geography and natural history, and find a potential water route to the Pacific Ocean. The expedition also sought to establish relations with Native American tribes encountered along the way. Overall, it was a crucial step in expanding the United States' understanding and control of the western frontier.