World War II was a global conflict that took place from 1939 to 1945.
The war was primarily triggered by the aggressive expansionist policies of Nazi Germany, under the leadership of Adolf Hitler.
The war involved two main alliances: the Allies and the Axis powers. The Allies consisted of countries such as the United States, the Soviet Union, the United Kingdom, and China and others. The Axis powers were led by Germany, Italy, and Japan.
In the end of the war, he atomic bomb was unleashed on the Japanese cities of Hiroshima and Nagasaki in early August. On August 15, 1945, Emperor Hirohito announced Japan’s acceptance of the terms of surrender, effectively ending the war in the Pacific. This day became known as “V-J Day” (Victory over Japan Day).