Sacajawea helped Meriwether Lewis and William Clark explore the West. Without Sacajawea, the Indians would probably have killed Lewis and Clark. Sacajawea talked to the people of other tribes so that they would let them cross their territory. She also carried her son, Jean Baptiste Charbonneau, on her back the whole way after giving birth. Her husband, Toussaint Charbonneau was a tracker on the expedition.