Did the river valleys trade with each other?

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)

How did the united states obtained the purchase of floridia to extand its frontiers to the pacific ocean

What country was the philippines declaring independence from in this proclamation?