Answer:
Night of the Long Knives, in German history, purge of Nazi leaders by Adolf Hitler on June 30, 1934. Fearing that the paramilitary SA had become too powerful, Hitler ordered his elite SS guards to murder the organization's leaders, including Ernst Röhm.
Because the US had a great geographical location which shileded them from immediate contact with any military force. This was one thing, another thing was that they were lending money to the different European nations which they had to return after some time. All of this enabled the US to catapult itself and become a world power.
because im a n.i.g.g.e.r and i like balls
It has helped develop the nation by allowing faster transportation of materials needed to colonize.