The olmec civilization a) had poor architectural skills. b) left behind mysterious stone sculptures. c) were the most advanced pre-columbian civilization. d) was not able to trade because of its geographic isolation.

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.