Lewis and Clark expedition

Louisiana Purchase Treaty Signed

Apr 30, 1803

The Louisiana Purchate Treaty was signed on July 4 1803

Expedition Begins

May 14, 1804

This is when the expedition begins

Friendly council with Yankton Siox held

Aug 30, 1804

Council was held

Sgt Charles Floyd

Aug 30, 1804

Near present day sioux city, Iowa Sgt. Charles Floyddies of probable appendix burst

Expedition dicovers earthlodge

Oct 24, 1804

Expedition dicovers earthlodge villagers of the Mandan and Hidatsas Indians

Fort Mandan

Oct 24, 1804

Fort Mandan across the river from the Main village

Completed fort Mandan

Dec 24, 1804

Fort Mandan completed, expedition moves in for winter

Sacagawea

Feb 11, 1805

Sacagawea give birth to baby boy Jean Baptist

Fork in the river

Jun 2, 1805

The expedition comes to a fork in the river

Expedition ends

Sep 23, 1806

The expedition returns to St louis