When did Jefferson send Lewis and Clark to Louisiana?
When did Jefferson send Lewis and Clark to Louisiana? Students will learn that the United States purchased the Louisiana Territory in 1803 and President Thomas Jefferson sent Lewis and Clark to explore west of the Mississippi River in 1804 — though the land was already inhabited and politically complicated. Who was the leader of the Lewis and Clark Expedition? Lewis & Clark Expedition. After the Louisiana Purchase Treaty was made, Jefferson initiated an exploration of the newly purchased land and the territory beyond the "great rock mountains" in the West. He chose Meriwether Lewis to lead an expedition, who in...