II.

Background

Although Jefferson had long been interested in the American West, it was not until 1802 that he began to plan an expedition to the Pacific. After reading Voyages from Montréal (1801) by Canadian explorer and fur trader Sir Alexander Mackenzie in the summer of 1802, the president began to make preparations for an American expedition aimed at countering Mackenzie’s plans to make the West and Pacific Northwest part of the British Empire. Influenced by the renowned 18th-century journeys of Captain James Cook and Captain George Vancouver, Jefferson envisioned an official expedition that combined diplomatic, scientific, and commercial goals. He believed that the nation that dominated a water passage through the continent could control the destiny of all North America. He was also convinced that the West would be a paradise for American farmers.