Recognize reasons people would move from their homes to new land in the west and the impact westward expansion had on American Indians; identify at least one or more people, movements, and events involved in America’s early westward expansion, including Lewis and Clark, Sacagawea, the Indian Removal Act, and the gold rush; identify the inventions that aided westward expansion, including the railroad and the steamboat; illustrate the completion of the contiguous United States on a map.