World Wars History

World War II began in September 1939 when Nazi Germany invaded Poland, leading Britain and France to declare war on Germany. This event marked the formal start of the global conflict.

World War I commenced in 1914 when Archduke Franz Ferdinand of Austria was assassinated in Sarajevo, triggering a chain reaction of declarations of war among European powers due to complex alliance systems.

The first atomic bomb used in warfare was dropped on Hiroshima on August 6, 1945 by the United States. The second bomb fell on Nagasaki three days later (August 9).

Japan suffered maximum devastation in WWII through atomic bombings on Hiroshima and Nagasaki, firebombing of Tokyo, and total war casualties. While Germany and USSR had higher military casualties, Japan's civilian losses from nuclear attacks were unprecedented.

The American Revolutionary War began in April 1775 with the Battles of Lexington and Concord. While the Declaration of Independence was signed in 1776, the armed conflict started in 1775. 1775 is the correct year.