The invasion of Poland .
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Mexico. -and you shouldn't be asking for answers to your test/essay/whatever on the internet. look it up in a book!
Britain, France and the Soviet Union were on the same side during World War 2
It might be Dunkirk
The Fall of France in 1940 meant that Germany had access to the Atlantic Ocean, circumventing the British blockade of Germany.
The German invasion of France started on 10 May 1940 and resulted in the French surrendering on 22 June 1940.
The invasion of Poland on the 1st September 1939
invasion of Poland
The experts do know one of the triggers that caused World War 2. It was because of Germany's invasion of Poland that caused France and Britain to declare war.
Britain entered the fighting World War I after the German invasion of Belgium.
Poland
France and Great Britain (and most of the commonwealth countries) declared war on Germany as a result of their invasion of Poland.
Who assassinated the above leader in world war 1
The German army crossing into Belgium, whose neutrality had been guaranteed by Britain.
Here is the main summary of why World War 2 happened from an article. World War Two began in September 1939 when Britain and France declared war on Germany following Germany's invasion of Poland. Although the outbreak of war was triggered by Germany's invasion of Poland, the causes of the war are more complex.
World War II officially began after Germany invaded Poland. The invasion of Poland caused England and France to declare war on Germany.
During the 1930's, Britain and France had a defence agreement with Poland. On 1 September 1939, German troops invaded Poland, so on 3 September 1939, in response to that invasion, Britain and France declared war on Germany.
The invasion of Poland by the Russians was scarcely even noticed. What grabbed all the headlines was the invasion on the 1st September 1939 by the Germans. On the 3rd Britain & France declared war.