Sacagawea was a teenager when she joined the Corps of Discovery. Although she was a Shoshone from Idaho, she had been taken in a raid by another tribe when she was 11 or 12. After she married Toussaint Charbonneau, a French Canadian hired as an interpreter by the Corps, she also joined the crew.

When the expedition met with a band of Shoshone in the summer of 1805, Sacagawea had an unexpected surprise:  she discovered the tribe’s leader was her long-lost brother Cameahwait, whom she had not seen since her abduction five years earlier. The tearful reunion helped facilitate peaceful relations between the explorers and the Shoshone, allowing Lewis and Clark to procure much-needed horses for their trek over the Rockies.

Scroll down and click page 7 for the final question.