World War II

World War II was a global conflict that lasted from 1939 to 1945, involving most of the world’s nations. It is broadly divided into two opposing military alliances: the Allies and the Axis powers. The war began on September 1, 1939, when Germany invaded Poland, prompting Britain and France to declare war on Germany.

The conflict expanded to include numerous theaters of war in Europe, the Pacific, North Africa, and Asia. Major events included the Holocaust, the use of atomic bombs on Hiroshima and Nagasaki, and the battles of Stalingrad, Midway, and Normandy.

World War II resulted in significant military and civilian casualties, with an estimated 70-85 million fatalities, making it one of the deadliest conflicts in history. The war concluded with the unconditional surrender of the Axis powers in 1945, leading to major geopolitical changes, the establishment of the United Nations, and the beginning of the Cold War era. The legacy of World War II continues to shape international relations and global history today.