What changed about the river valley civilizations as they rose and fell ? a. the environment b. the actual water formations c. the religion

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)

American reaction to the 9/11 tragedy can be characterized as patriotism. a. true b. false

What was the grimke sisters' argument for equal rights for women based on?