What is the rewrite going to be i don’t understand what i have to do

What is the main idea of this excerpt? 1.1.3

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.

All of the following are reasons that rome was so strong and powerful except a. rome had excellent soldiers c. they were armed with a gladius and pilum b. they had legions d. they valued education and intellect