Places, Regions, and Landscapes 5. Look at map C and picture A. Use the information to complete the following paragraph. Lewis and Clark followed the Missouri River across the mont Plains. Many Native Americans in this region hunted bw \\\\ on horseback. After spending the winter of 1804 among the Mandan Indians, the expedition moved into the Mountains. A Shoshone Indian led them through Pass and Pass in the mountains. They continued along the River, which flowed into the River and then into the Pacific Ocean