Answer:
On the Invasion of Poland, It had poland collapse in the beginning stages of the war. The invasion of france lead to years of french resistance after its collapse. The invasion of the Soviet Union is what ultimately lead to the end of the war, D-Day would not have been possible without Germany in a two front war. The attack on Pearl Harbor is what lead to the end of the war as We know it.
The correct option is A
The Treaty of Non-Aggression between Germany and the Union of Soviet Socialist Republics, colloquially known as the Ribbentrop-Molotov Pact, was signed between Nazi Germany and the Soviet Union by the foreign ministers of these countries, Joachim von Ribbentrop and Vyacheslav Molotov respectively . The pact was signed in Moscow on August 23, 1939, nine days before the beginning of World War 2. The effects of the treaty were diminishing with the growing hostility between both nations until 1941 when the Nazi regime decided to invade the Soviet Union.