HELP ME OUT PLS How did the population of European immigrants in America change in the late 1800s and early 1900s.

A) Most immigrants came from eastern and southern Europe.

B) The number of European immigrants decreased.

C) The number of Protestant immigrants decreased.

D) There was not an increase of immigrants.

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.