The main way in which European motivations for exploration changed after the discovery of the Americas is that after the discovery many European nations became obsessed with colonization and extracting as many resources from the New World as possible.
The correct answer is B. The President wants to choose a justice that will be beneficial to him, even if it might now be the Congress's or current justices favorite.
B) The united states and the soviet union became the world's two most powerful states, leading to a global struggle between democracy and communism
After WW2 ended, the cold war begun, which was the race against the democratic powers the communist powers. This resulted in many proxy wars and was one of the biggest outcomes of WW2.
I hope this helps! :)