How did Sacagawea contribute to the expedition of Lewis and Clark?

or:How did Sacagawea contribute to the expedition of Lewis and Clark?or:From what i remember she guided them in terms of what foods are safe what riv

or:How did Sacagawea contribute to the expedition of Lewis and Clark?

or:From what i remember she guided them in terms of what foods are safe what rivers to go through because she was and indian.Thats what i think tho.i could be wrong

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