Sacagawea was a Shoshone woman who played a crucial role as a guide and interpreter for the Lewis and Clark Expedition from 1804 to 1806. She helped the expedition navigate the western territories of the United States and was instrumental in establishing friendly relations with Native American tribes. Sacagawea is often celebrated for her bravery and resourcefulness, and her contributions have made her an iconic figure in American history. She is also known for her role as a mother, carrying her infant son, Jean Baptiste, during the journey.