What event was a direct result of the Louisiana Purchase and helped to lay the foundations for western expansion?

The Lewis and Clark Expedition, which began in 1804, was a direct result of the Louisiana Purchase and played a crucial role in laying the foundations for western expansion. Commissioned by President Thomas Jefferson, the expedition aimed to explore the newly acquired territory, map the land, and establish trade with Native American tribes. Their journey provided valuable information about the geography, resources, and potential for settlement in the west, fueling further exploration and migration.