The document summarizes key events from Lewis and Clark's journey to Oregon in 3 sentences:
Lewis and Clark interacted with the Mandan and Hidatsa Indians, obtaining supplies like gunpowder and clothing to aid their expedition. They then encountered the Shoshone Indians and traded horses to facilitate communication through Sacagawea. The journey was perilous but the group persevered, ultimately riding their horses all the way to the Pacific Ocean having survived numerous dangerous encounters with Native Americans along the way.