Matching Pairs Westward MovementOnline version Link the pairs. Use the information we saw last week: The westward expansion. by Andrea Hurtado 1 Indian Removal 2 Oregon Trail, 3 Westward Movement 4 western pioneers 5 Indian Removal Act Expansion of the United States westward across the Appalachian Mountains and eventually across the Mississippi River. law allowed the federal government to force American Indians to move west Threatened by the U.S. Army, most American Indian groups signed treaties agreeing to expulsion. Traders looking for new sources of goods a route that stretched over 2,000 miles from Missouri to Oregon