What was the main objective of the Lewis and Clark Expedition?

The main objective of the Lewis and Clark Expedition was to explore the territories acquired in the Louisiana Purchase. This landmark acquisition in 1803 significantly expanded the United States, and President Thomas Jefferson recognized the need for exploration to gather information about this vast new land. The expedition aimed to chart the geography, collect scientific data, and establish relationships with Native American tribes. Lewis and Clark set out to document natural resources, flora and fauna, and the general landscape, which contributed to the understanding of the new territory and facilitated westward expansion. This objective was crucial for setting the stage for future settlements and development in the West.