I Believe World War 2 started when Germany invaded Poland.
Which was on September 1,1939
Actually, WWII began in Europe on September 3, 1939, when first Britain, then France, declared war on Germany over the German invasion of Poland 2 days earlier.
Someone told be WW2 started 1935. Problem is No Declarations of War from Germany was issued in that Year.
When did WW2/World War 2 start ?
(Comment when you think it started)
It is debated to when WW2 started.