Primary Topics / Louisiana’s Purchase

Louisiana’s Purchase

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

    The Louisiana Purchase

    by

    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.

    Du Pratz’s History of Louisiana

    Lewis's reference book

    by

    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.

    Louisiana’s History

    14,000 years of change

    by

    It begins 14,000 years ago with Indian occupancy of the lower Mississippi Valley. La Salle comes in 1682 claiming it for France.

    Louisiana’s Political Geography

    by ,

    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.

    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.

    St. Louis

    Gateway to the west

    by

    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.

    The Freeman-Custis Expedition

    The "Grand Excursion"

    by ,

    Narrated in both English and Spanish, Daniel Flores tells the story of a parallel, southern exploration now nearly forgotten.

    La Freeman-Custis Expedición

    La Gran Excursión

    by ,

    Narrado tanto en inglés como en español, Daniel Flores narra la historia de una exploración paralela y sureña ahora casi olvidada.

    Postscript to the Purchase

    Mapping the American future

    by ,

    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.

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.