The Truman Doctrine was the event that triggered off the Cold War.
Explanation: Both parties were mutually hostile and did not believe in a possible peaceful coexistence anymore. The Americans and Soviets’ hostility to each other as well as the belief that they could no longer cooperate after the start of the Cold War resulted in the Berlin Blockade. Thus, I can conclude that the Truman Doctrine marked the start of the Cold War.
All of the colonies except Cuba and Puerto Rico attained independence by the 1820's.
Both groups believed in a personal experience of God and his power. However, Puritans had ministers in their churches while Quakers did not. Penn desired to gain respect and friendship and paid Native Americans for land. Puritans, on the other hand, despised them and had no will to communicate with them.