World War 2 was the largest war ever waged in human history lasting from 1939 to 1945 between two primary military alliances, the Allies and the Axis. It started with Poland’s invasion by Nazi Germany and Communist Soviet Union after the secret Molotov-Ribbentrop pact between the two powers that led France and the United Kingdom to declare war on Germany.
The war occurred on multiple battlefronts and involved more than 100 million soldiers from over 30 countries from across the globe. It resulted in a collective casualty of over 80 million military as well as civilian deaths.
It ended with the Axis defeat after the fall of Berlin and the Nuclear Bombing of the Japanese cities of Hiroshima and Nagasaki by the United States. It had a profound effect on the subsequent world politics and histories like the eventual fall of the British and French Empires and their colonies’ independence, significant shifts in global politics, and the United Nations’ formation
