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This Day in American History

May 14

1 historic event on this date

Historical1804

Lewis and Clark Expedition Departs

Meriwether Lewis, William Clark, and the Corps of Discovery departed from Camp Dubois near St. Louis to explore the Louisiana Purchase territory and find a route to the Pacific Ocean. The journey would take over two years and cover nearly 8,000 miles.

Why It Matters

The expedition expanded American knowledge of the continent, strengthened U.S. claims to the Pacific Northwest, and demonstrated the young republic's ambition to become a continental nation.

Explore the Principles Behind the History

Every event in American history connects to the founding principles. Discover the ideas that shaped these moments.

View the 28 Founding Principles