WWII DURING 1939-1941
World War II was a global conflict that lasted from 1939 to 1945 and involved the majority of the world's nations, including all of the great powers. It was the most widespread war in history, directly involving more than 100 million people from over 30 countries. The war saw significant technological advances, including the use of nuclear weapons, and resulted in the deaths of millions of people, including civilians. The causes of World War II were the aggressive actions of Nazi Germany, led by dictator Adolf Hitler, and the Axis powers in Europe, as well as Japan's expansionist policies in Asia. The war had a significant impact on world events and continues to shape international relations to this day.