When did World War Two begin?

from the western perspective 1939. from the chinese/japense perspective 1937. i would say 1937 is correct historically speaking, however 1939 is the generally accepted year. of course the origins can be traced back to 1918-19.
most western history books will say 1939, and thats when most people think it started.

the reason i reckon its 1937, is because the Chinese-Japanese conflict is considered part of world war two, so surely the first shots of ny conflict considered part of world war two are when ww2 started? when europeans, americans etc say it was 1939, then they say this because that was when it started for their countries (though obviously the US didnt join until 1941). from a truly global perspective WW2 started in 1937 when Japan invaded Chinese Manchuria, starting a war that would continue until 1945.

I didnt think this way until my genius university lecturer enlightened me.


That’s a tough question, really. The accepted answer is two dates, September 1, 1939 when Germany’s invasion of Poland began and December 7, 1941 when Japan attacked Pearl Harbor. Thus began the European and Pacific Theaters of the war.

However, one can argue that the Pacific Theater actually began September 18, 1931 with the Japanese invasion of Manchuria. This appears to be the first point in which the Japanese started their conquest of Asia and the Pacific and the first place they really used force to do so. Another arguement could be made that the war in Europe actually began with the signing of the Treaty of Versailles by Germany on November 11, 1918. WWII has also been called a continuation of WWI and the signing of the treaty really set things up for Hitler’s rise and the start of WWII.

Just over 68 years ago on September 1st 1939, Germany invaded Poland without warning. It was the beginning of the World War Two.

Yes, you ARE getting different answers here, and here’s one that’s even more different.

Some historians are of the opinion that World War II actually began in 1931, when the Japanese invaded Manchuria in the Second Sino-Japanese War. This was the start of the Japanese expansion into much of Asia, and predated the Nazis’ expansion into Europe which culminated with the invasion of Poland in 1939, which brought Britain into the war.

The Americans gave aid to the British while maintaining their neutrality, and only entered the war in 1941, following the attack on Pearl Harbor.

1939, although there is doubt that it was a ‘world war’ only when america declared war on Japan, that is wrong. When the Allies declared war on the Axis it was a world war because it affected everyone. For instance some countries, while not directly involved, profited from selling Arms to the warring countries, and some countries were threatened, this affected their position internationally.

Britain, France, Australia, New Zealand declared war on Gemany on Sep 3/1939. Canada declared war on Germany Sep 10/1939. Japan declares war on USA Dec 7/1941. Britain declared war on Japan on Dec 7/1941. USA declares war on Japan Dec 8/1941. Germany declares war on USA Dec 11/1941. Soviets declar war on Japan Aug 8/1945.

Somewhat confusing isn’t it?



World war II began in 1939 but its causes were present right from 1850 when Greece recognised its independence from Turkey with the help of European powers

the world war II was between 1939 to 1945

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