Corps of Discovery
Meriwether Lewis · 1804 CE – 1806 CE · Earth
Explore the Missouri and reach the Pacific.
Historical context
The Louisiana Purchase doubled the young United States overnight, and Jefferson wanted its rivers, peoples and potential charted. The Corps of Discovery travelled to the Pacific and back over two years.
The voyage, step by step
Up the Missouri
1804 CE
The Corps of Discovery leaves St Louis to explore the Louisiana Purchase.
Winter among the Mandan
1804 CE
They winter with the Mandan and take on Sacagawea as guide and interpreter.
Crossing the Rockies
1805 CE
They struggle over the mountains with horses bought from the Shoshone.
To the Pacific
1805 CE
They reach the Pacific coast and vote on where to winter — including Sacagawea's vote.
Outcome
Reached the Pacific coast and returned with journals.
Meriwether Lewis
American explorer who, with William Clark, led the first US overland expedition to the Pacific coast.
Sources
Continue exploring
- Fort Mandan to the PacificSacagawea · 1804 CE – 1806 CE
- To Timbuktu and across the SaharaRené Caillié · 1827 CE – 1828 CE
- Overland from Adelaide to King George’s SoundEdward John Eyre · 1840 CE – 1841 CE
- Moreton Bay to Port EssingtonLudwig Leichhardt · 1844 CE – 1845 CE