The Lewis and Clark expedition was an 8,000-mile journey that changed the United States forever. This volume introduces students to the history and politics of the Louisiana Purchase and westward expansion while exploring the adventures and challenges faced by the Corps of Discovery on their expedition. Readers meet important historical figures, such as Thomas Jefferson, Meriwether Lewis, William Clark, and Sacagawea. Primary sources allow readers to connect with historical context and place themselves in the time period. Accessible text and accompanying visuals will make the Lewis and Clark expedition come to life.