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This question is a lot more complicated than it sounds on the surface. Germany first invaded Poland on September 1, 1939. However, it was a long time before, for example, the United States became involved. Reaction to the war was generally slow and took place over a long period of time, but the event that arguably triggered all subsequent chaos was that invasion. A lot of thought could go into the date at which it became a world war, and many people would probably reference Hitler's rise to power as the point when WW2 became inevitable... but the first military aggression in the war was September 1, 1939-- and that's the only concrete date one could call the "start" of the war.
What else can I help you with?
What conflict began almost immediately after ww2 ended hint it involved the ussr?
Cold War 1945-1991
The dates and year that world war 2 started and the date and year in finished?
WW2 began in 1939 and ended in 1945:)
What season was it when World War 1 began?
Summer. Franz Ferdinand was assassinated at the end of June; Austria declared war on Serbia about a month later, and the war began.
How many German battleships were in World War 2?
The Germans started WW2 with 6 battleships. One, the Graf Spee was damaged and scuttled in the second month of war.
What changes did WW2 bring?
The United Nations (UN) was formed. The United States and the USSR became world superpowers. The Warsaw Pact was written and NATO was formed. The Cold War began.
Which conflict began when Germany invaded Poland?
WW2
When did the world war war 2 began and where?
WW2 began in 1939 when Germany invaded Poland.
What happend after pearl harbor was bombed?
WW2 began, for the US.
Who was the US president when WW2 began?
Franklin D. Roosevelt
Who was US president when WW2 began.?
Franklin D. Roosevelt
When did World War 2 officially begin and what lead to it?
For the United States, WW2 officially began on December 7, 1941. In Asia, WW2 began in 1931, 1933, or 1937, depending upon which book you are reading. The war in Europe began in 1939. Under Great Britain's urging, historians have accepted Britain's definition for the beginning of WW2; September 1, 1939.
What country did troops crossed the border that made World War 2 began?
WW2 began when German troops invaded Poland.
What was a lasting impact of world war 1 on the us?
It began to prepare the US for WW2
How did Word War 2 begin?
WW2 began with Hitler's armies invading Poland.
Month in which Civil War began?
April
What month did the Constitutional Convention began?
july
What happened in Europe after WW2?
Hitler committed suicide and the cold war between Russia and the USA began
