The Invasion Of Poland by Germany in 1939.
England did not declare war on Germany. Great Britain did. England is not an independent nation. Nonetheless the Answer is still Poland.
September 1939
11:15 on September 3rd
1939?
1939
1939.
Because of Germany's attack on Poland.
The 1939 invasion of Poland caused Britain to declare war on Germany, which started WWII.
Germany started a series of invasions of neighboring Countries. France and England had a treaty with Poland to mutually defend each other. When Germany invaded Poland It was ON!
3rd Sept 1939 in europ
Britain decided to declare war on Germany on September 3rd, 1939.