What happened when Sacagawea met the shoshone tribe?

Sacajawea accompanied Lewis and Clark to try to find the Northwest passage in the West. Back then, the Americans in Lewis's and Clark's time thought that the West was a great deserted plain. Lewis and Clark were sent, along with some others, to explore. They found different plants, animals, and land marks. Some of these were different types of flowers, the Rocky Mountains, and buffalo. They also met more Native Americans. At the end Lewis and Clark did not find the Northwest passage, because it does not exist. But they discovered many other things.