9th grade us history test

Which of the following is an example of one of the successes of the marshall plan? a. a few eastern european countries decided to turn to democracy. b. western european economies were stronger than they had been before wwii. c. borders between western and eastern european countries shifted. d. eastern european countries eventually took part in the plan. ( answer in the format above so i can understand)

Which is proper hierarchy or leadership roles in the senate from lowest to highest

Were african-americans allowed to serve in the military in wwi? explain