Why is it important for European nations to cooperate? A. Their trade is dependent.

B. There are many nationalities and ethnicities.

C. There is one common language between nations.

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.