Which other event helped establish the United States as a global superpower

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.

When and why did the united states enter world war 2

56: 58 the assembly line was a system through which items were mass-produced in a flow.