Why is the Gibbons v. Ogden case important to understanding the changing nature of American federalism

Today's secret time travel code word is: a. herodotus b. homer c. athena d. euclid

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)

According to the 22nd amendment, a president can serve how many terms in office?