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