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In the late 1930s Poland found itself between two expansionist powers, Germany and the Soviet Union. Germany wanted to invade Poland but feared that such an invasion would spark a war with the Soviet Union. This fear was removed when Germany and the Soviet Union signed the Molotov-Ribbentrop Pact on August 23, 1939. One of the secret clauses in the pact was the provision that Germany and the Soviet Union wound mutually invade Poland and carve up its territory between them.

Fearing for its safety, Poland entered into the Polish-British Common Defense Pact on August 25, 1939. The pact declared that the UK would defend Poland if invaded by Germany. A similar agreement was already in place between Poland and France. On the night of August 31, 1939 German operatives, dressed as Polish soldiers, created a false flag by seizing a German radio station at Gleiwitz in the German border province of Upper Silesia. The Germans used this "attack" as a pretext to invade Poland. The following day, September 1 1939, Germany troops crossed the Polish frontier. On September 3, 1939, Britain and France declared war on Germany.

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15y ago

Invasion of Poland by Germany and Russia.

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The german invasion of poland

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Germany attacked Poland.

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Q: Which event caused the outbreak of ww2 in September 1939?
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Which event caused the outbreak of world war 2 in September 1939?

the german invasion of Poland


What event caused world war 2 in September 1939?

In the 1930's, Britain and France had a defence agreement with Poland. On 1 September 1939, German forces attacked Poland, so on 3 September 1939 Britain and France declared war on Germany.


Why did they have world war2?

The event that led to the outbreak of WW2 is understood to be the 1939 invasion od Poland by Natzi Germany. ~Nick


Was the British Policy of appeasement mainly responsible for the outbreak of war in 1939?

The outbreak of another world war in 1939 was in part caused by the British appeasement-policy of the 1930s. Other factors were responsible, as well, such as the intentional and determined aggression of Germany.


What event led to the start of World War 2?

On September 1st 1939 the German army invaded neighboring Poland and caused what is known as today World War II.


What event started the armed conflict in Europe in 1939?

On 1 September 1939, German forces attacked Poland.


Which event officially started World war two in Europe?

the event was when Germany invaded Poland. when Britain and France found out they declare war on Germany.


When did the event occur which started world war 2?

the invasion of poland 1st september 1939


Which event sparked World War 2?

The German invasion of Poland on 1st September 1939


What caused World War 2 When did it start?

The German attack on Poland 1 September 1939


What caused Great Britain to enter WWII?

The German invasion of Poland on 1 September 1939.


Who was prime minister of England at the start of World War 2?

The Prime Minister of the UK at the outbreak of war on 3rd September 1939 was Neville Chamberlain (Con)