What were some ways in which the united states showed signs of isolationism after world war i

What are the reasons that some europeans moved and began colonizing the new world? select all that apply: options: better economic opportunities. some were escaping religious persecution. attempting to increase their wealth, despite the hardships and risks. the new world was safer and more secure than the old world.

Could anything have been done through compromise to stop it, or did it have to happen?

Why did the second indochina war start in 1956