What strategy did the german army use to conquer most of europe

Describe germany’s successes at the beginning of world war 2?

In ww1 where did france find laborers to with their war movement? ? & what country did the french fear?

How did the northern u.s. change during the 19th century? select the best choice from the answers provided. a. it became more industrial. b. it became more agrarian. c. it became less populated. d. it became less diverse