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 primarily characterized by the confrontation between two major military alliances: the Allies, including the United States, the Soviet Union, the United Kingdom, and China, against the Axis powers, primarily Germany, Italy, and Japan. The war was marked by significant events such as the Holocaust, the use of atomic bombs on Hiroshima and Nagasaki, and extensive battles across Europe, the Pacific, and North Africa. World War II resulted in an estimated tens of millions of military and civilian casualties, leading to profound political, social, and economic changes worldwide. The aftermath of the war saw the establishment of the United Nations, the beginning of the Cold War, and the division of Europe into Eastern and Western blocs, which shaped international relations for decades.