With what purchase did the mainland us reach its present size?

What event brought the us into wwii? what conflicts happened after the us entered the war? i know the first part of this question, i need with the second part.

During the 1960s, how did the neural movement promote the chicano movement

Which of the following best describes the outcome of the bay of pigs invasion? -it ended in a draw despite strong air support from the united states. -it was a partial success that to resolve the cuban missile crisis. -it was a success and created hostility between cuba and the soviet union. -it was a failure that was an embarrassment for the kennedy administration.