North American expeditions

Lewis and Clark Expedition

The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the United States expedition to cross the newly acquired western portion of the country after the Louisiana Purchase. The Corps of Discovery was a select group of U.S.

Pike Expedition

The Pike Expedition (July 15, 1806 – July 1, 1807) was a military party sent out by President Thomas Jefferson and authorized by the United States government to explore the south and west of the recent Louisiana Purchase. It was led by United States Army Lieutenant Zebulon Pike, Jr. who was promoted to captain during the trip.