In the late 1800s, Americans supported expansionism because: 1) They wanted to rule the world
2) They wanted access to raw materials and markets
3) They needed more slave labor
4) They needed more living space for the American people

What makes fort sill historically unique among other regional military installations? a. it is the site where seven major commanders of us military efforts were trained. b. it houses the largest explosive weapons factory in the united states. c. it specializes in training soldiers to preserve the cultural artifacts of nations invaded by the us military. d. it is the oldest functioning installation in oklahoma.