 part of the Mandan Indian nation as a young girl and traded to them. Charbonneau was a Frenchman, a French trader, a French national who married several Indian wives, many sort of, and had several at the same time, sort of over the course of his life. But Sacagawea will accompany the expedition when it leaves Fort Mandan, which is kind of up there in North Dakota, the middle of North Dakota today.