In what became known as the Louisiana Purchase, the President’s representatives in Paris had bargained successfully with Napoleon’s bureaucrats not only to buy the port of New Orleans, then the keystone of the continent, but also to acquire, at three cents an acre, an area extending from the Mississippi River to . . . where? No one knew until Meriwether Lewis stood at the crest of the Rocky Mountains at a place known today as Lemhi Pass, on 12 August 1805.
Related Pages
What was it about du Pratz’s History of Louisiana that so interested Lewis? The book not only provided geographical information, it was the model that Lewis and Clark were to follow when reporting to President Jefferson.
It begins 14,000 years ago with Indian occupancy of the lower Mississippi Valley. La Salle comes in 1682 claiming it for France.
On 9 April 1682, René La Salle, claimed “possession of this country of Louisiana.” Thus, without any belligerent confrontations began the decline of one already ancient meta-culture, and the rise of a succession of new empires.
The Louisiana Purchase
by Pierce Mullen
Easter week in Paris, 1803, was truly momentous for the young United States of America. The American Minister to France, Robert R. Livingston was sent to discuss the difficult question of New Orleans, the Mississippi and Franco-American relations.
Louisiana Purchase Timeline
From the primary sources
The Lewis and Clark Expedition was woven into the tapestry of one of the most significant events in the history of the United States of America—the Louisiana Purchase. This timeline details the significant events with excerpts from—and hyperlinks to—the primary sources.
In 1804 and in the presence of the Lewis and Clark expedition the little village, built and designed to be an outpost of the fur trade, shed its ambiguous Spanish-French parentage and took on full American citizenship.
Narrated in both English and Spanish, Daniel Flores tells the story of a parallel, southern exploration now nearly forgotten.
Narrado tanto en inglés como en español, Daniel Flores narra la historia de una exploración paralela y sureña ahora casi olvidada.
Determining the extent of the upper Missouri watershed was the single most important task Lewis and Clark faced. Their search for the westernmost source of the Jefferson River nearly cost them their lives.
Experience the Lewis and Clark Trail
The Lewis and Clark Trail Experience—our sister site at lewisandclark.travel—connects the world to people and places on the Lewis and Clark Trail.
Discover More
- The Lewis and Clark Expedition: Day by Day by Gary E. Moulton (University of Nebraska Press, 2018). The story in prose, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals: An American Epic of Discovery (abridged) by Gary E. Moulton (University of Nebraska Press, 2003). Selected journal excerpts, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals. by Gary E. Moulton (University of Nebraska Press, 1983–2001). The complete story in 13 volumes.
This site is provided as a public service by the
Lewis and Clark Trail Alliance
with cooperation and funding from the following organizations:
- Lewis and Clark National Historic Trail
- Montana Committee for the Humanities
- Idaho Governor's Lewis and Clark Trail Committee
- The Capital Gallery (Lewis and Clark Fort Mandan Foundation)
- Yellowstone Public Radio
Unless otherwise noted, journal excerpts are from The Journals of the Lewis and Clark Expedition, edited by Gary E. Moulton, 13 vols. (Lincoln: University of Nebraska Press, 1983-2001).