Lewis and Clark Expedition

The Lewis and Clark Expedition was a scientific journey across the western United States from 1804 to 1806 that aimed to map unexplored territory, document new plant and animal species, and understand the geography and resources of the newly acquired Louisiana Territory. Led by Meriwether Lewis and William Clark, the expedition collected thousands of specimens and detailed observations that greatly expanded scientific knowledge of North American biology, geology, and Native American cultures. This exploration laid the foundation for future scientific study of the American West and demonstrated how systematic observation and documentation could unlock the mysteries of an unmapped frontier.