Why was Sacajawea able to obtain horses and additional guides from the shosones?

Sacajawea was able to obtain horses and additional guides from the Shoshones primarily due to her strong connection with the tribe, having been born into the Lemhi Shoshone tribe herself. Her presence with the Lewis and Clark expedition, along with the goodwill she fostered through her role as an interpreter and negotiator, helped establish trust. Additionally, the expedition's need for horses for their journey and Sacajawea's knowledge of local customs facilitated the acquisition of resources from her people.