The German invasion of Poland started World War Two.
Germany's invasion of Poland.
Archduke Ferdinand
The smoking gun that triggered World War II was Germany's invasion of Poland on September 1, 1939. This aggressive act followed a series of territorial expansions by Nazi Germany under Adolf Hitler, violating the Treaty of Versailles and escalating tensions in Europe. In response to the invasion, Britain and France declared war on Germany on September 3, 1939, marking the official start of the conflict.
When the Germans violated British neutrality to reach France, Britian declared war on Germany.
Invasion of poland
invasion of poland
POLAND
Hitler's invasion of Poland in 1939.
Germany's invasion of Poland.
Romania did not want war; the Soviet and Hungarian invasion triggered the war.
Poland, on 1 September 1939
German invasion of Poland 01 Sept 1939
North Korea's invasion into South Korea triggered the war.
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.
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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.