Matching Pairs Westward MovementOnline version Link the pairs. Use the information we saw last week: The westward expansion. by Andrea Hurtado 1 western pioneers 2 Oregon Trail, 3 Indian Removal Act 4 Indian Removal 5 Westward Movement Traders looking for new sources of goods a route that stretched over 2,000 miles from Missouri to Oregon Threatened by the U.S. Army, most American Indian groups signed treaties agreeing to expulsion. 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