What are the legal means of becoming a U. S. citizen?

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.

Pl did european countries want to find a shorter route to the far east? a. costs would be lower. b. they could take more trips. c. the route they used was rough and dangerous. d. sailors did not want to be away from home so long.

What does the document of the birtish octopus is an uderlying cause of the world war 1