The answer is c I think! I had this question before on one of my test
Italy joined the Anti-Comintern Pact on November 6, 1937. On May 22, 1939, Germany and Italy signed the so-called Pact of Steel, formalizing the Axis alliance with military provisions. Finally, on September 27, 1940, Germany, Italy, and Japan signed the Tripartite Pact, which became known as the Axis alliance.
The correct answer is Berlin
After the Soviets blockaded Berlin, Western allies banded together and undertook an airlift to relieve the people of Berlin.