https://history.state.gov/milestones/1750-1775/french-indian-war
I think he assisted in developing NATO, which helped Western Europe rebuild after the war. He created the Marshall Plan, which provided economic support for war-torn regions. He helped stop the spread of communism in Western Europe.
After the death of Timur in 1405, power began to shift from migrating peoples to sedentary populations living in large centralized empires. After about 1683, when the last Ottoman campaign against Vienna failed, the great empires for which this period is so famous began to shrink and weaken
In 1917, Germany attacked some passengers in submarines from the US that led the US to assist in WW1. Hope this helps!