The date that most historians use for the start of World War II is September 1, 1939. This is when Germany invaded Poland, leading to Britain and France declaring war on Germany. The event marked the beginning of a global conflict that involved many countries and lasted until 1945.
Here's why each of the other dates listed is not considered the start of World War II:
1. June 6, 1938: This date is not the start of World War II. It falls before the invasion of Poland in 1939.
2. December 7, 1941: While this date marks the attack on Pearl Harbor by Japan, it is not considered the start of World War II as many countries were already engaged in conflict before this event.
3. May 5, 1942: This date is also not the beginning of World War II. By 1942, the war was already well underway with major battles and events occurring in various parts of the world.
