Well for one thing she was the guide for louis and clark whom would have probably perished without her...
Squaw.
to help Lewis and Clark
sacagawea
celia malea and swca
Acted as a translater
She gave help to Lewis and Clark and took them to her brother for help.
This is unknown as of now being as she was captured/adopted at a young age.
Sacajawea's son's name was Jean Baptiste Charbonneau
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i would say drugs
Food production is the primary contribution, though raw material production is also very important.
her 1st born (and son) was named Jean Baptiste, nicknamed "Pomp," and her 2nd born was named Lizette