1939 – The Molotov-Ribbentrop Pact (also known as Nazi-Soviet Pact) is signed between German foreign minister Joachim von Ribbentrop and Soviet foreign minister Vyacheslav Molotov.

1991 – Mikhail Gorbachev resigns as head of the Communist Party of the Soviet Union

1995 – Microsoft releases Windows 95, and revolutionizes the PC world, with the introduction of the Start Menu