On August 23, 1939–shortly before World War II (1939-45) broke out in Europe–enemies Nazi Germany and the Soviet Union surprised the world by signing the German-Soviet Nonaggression Pact, in which the two countries agreed to take no military action against each other for the next 10 years.
Bill and bi-cameral
7. A
8. B
The fall of the Berlin Wall in 1989, and the dissolution of the Soviet Union in 1991