Sacagawea was an important member of the Shoshone tribe. She was born in eastern Idaho in what is now Salmon, Idaho. It is thought that her birth year was about 1790. When Sacagawea was around the age of 10, she was captured by a raiding band of Hidatsa and carried to their camp near the border of North Dakota. She then was sold to a French fur-trader, Toussaint Charbonneau. In the wintertime, they stayed at Fort Mandan in which at this time, Sacagawea was pregnant. After winter, Sacagawea had given birth to he