Lewis and Clark first explored the North American West more than two hundred years ago. A number of Native Americans helped the duo and their crew survive their travels from 1804 to 1806. In fact, one of them, Sacagawea, is now a legend. The Shoshone teen was married to a French Trader and became mother to a baby son. Because she spoke two Native languages, Sacagawea joined the Lewis and Clark expedition as a translator. Together, they traveled eight...