"A woman with a party of men is a token of peace." as Clark noted in his journal. Which also gave the captains a head up with the natives. " sometimes we don't realize and that is by carrying a woman along, especially a woman who was carrying an infant, said to tribes this is not a party that is out for aggressive reasons. This is not a war party." (Least, PBS online) .
There are many legends and stories that are believed to be true about where Sacagawea was born, grew up, and lived. This is the one that I researched through my information, to whom knows if it is true or not. To my knowledge Sacagawea was born the daughter of the Shoshone chief (Idaho) but was captured at age eleven by an enemy tribe, the Hidatsa (or Minitari) of Knife River (North Dakota). Later to be sold (or won as some believe) as the "wife" a la facon du pays (after the fashion of the country) of Toussaint Charbonneau (a French-Canadian trapper/fur trader). Sacagawea would then live with Toussaint at his Mandan Village home. Sacagawea was very young at the time; one story tells me she was only fourteen. A few months after she was "married" and she was pregnant. Charbonneau's pregnant wife gave birth to a baby boy at Fort Mandan, February 11, 1805, and was given the Christian name Jean Baptiste Charbonneau. Nicknamed Pomp by Clark, Pomp was brought along to the Pacific and back to Mandan during 1805-1806. Later, Pomp was taken in by William Clark, who had grown fond of him; while his father, Toussaint Charbonneau, returned to work with the American Fur Company. "Sacagawea played an important role, not as a guide as she's been mythologized into, but as a person who could read the landscape fairly well. I think she could read rivers. She could read a valley, you know. She had a sense of what the landscape said about direction and where they, where they were going" explains Erica Funkhouser, a historian. (Funkhouser, PBS online) When the captains reached the Pacific, in November 1805, they needed to contact the Shoshone tribe, in which to borrow horses they required in order to hike across the "Rock Mountains".