Indian guide in the Lewis and clark expedition?

The Indian guide for the Lewis and Clark expedition was Sacagawea, a Shoshone woman who played a crucial role in aiding the expedition by serving as an interpreter and negotiator with various Native American tribes encountered along the journey. Sacagawea's knowledge of the land and her ability to communicate effectively helped the expedition navigate unfamiliar territory and establish diplomatic relations with indigenous peoples. Her presence also helped to demonstrate the peaceful intentions of the expedition to the tribes they encountered.