Lewis and Clark were commissioned by President Thomas Jefferson to explore the land he had acquired with the Louisiana Purchase. Their expedition became known as the Corps of Discovery. In 1804 they started their journey in St. Charles, Missouri and ended at Fort Clatsop, Oregon. Thomas Jefferson sent them to find a water route to the Pacific Ocean, as well as document the many plants and animals they found along the way. Clark did the charting and map making while Lewis studied the wildlife and land. Join Lewis and Clark on this journey of discovery.