Who translated for Lewis and Clark?

The primary translator for the Lewis and Clark Expedition was Sacagawea, a Shoshone woman who joined the expedition with her husband, Toussaint Charbonneau, who served as an interpreter.

While Charbonneau spoke some French and acted as an intermediary, Sacagawea's knowledge of several indigenous languages was essential for the expedition's success. She was able to translate for Lewis and Clark when they interacted with various Native American tribes, including the Shoshone, Hidatsa, and Mandan.

While her role as a translator is often emphasized, Sacagawea also played a vital role in the expedition as a guide, negotiator, and provider of food and supplies.