1. What was the Truman Doctrine? Why was the Truman Doctrine proclaimed in 1947?
— What was the Truman Doctrine https://youtu.be/Jb8aW46T3bg
— https://www.britannica.com/event/Truman-Doctrine
2. What was the Berlin Wall? What was the significance of the Berlin Wall?
— What was the Berlin Wall? https://youtu.be/IXzODWlTWgk
— https://www.britannica.com/topic/Berlin-Wall