Britain and France declared war on Germany on September 3, 1939. The reason was because Germany had launched a military invasion of Poland two days earlier, even though Britain and France had told Germany not to do so.
As dictated by a promise made, France and Britain immediately declared war on Germany after the invasion of Poland.
The German invasion of Poland on September 1, 1939.
4 September 1939 because New Zealand was one of the first countries to be involved in the global conflict precipitated by Germany's invasion of Poland on 1 Sept. It was a consequence of Britain's defence pact with Poland, and consequent war declaration on the 3 Sept, and many British commonwealth countries were of course directly affected.
The German invasion of Poland on 1 September 1939.
1939
The 1939 invasion of Poland caused Britain to declare war on Germany, which started WWII.
3rd Sept 1939 in europ
September 1939
Because at 1 September 1939 Germany invaded Poland.
The invasion of Poland which began in September 1939
the invasion of Poland in Sept 1939
Britain decided to declare war on Germany on September 3rd, 1939.
If you mean when did he declare that Britain was at war with Germany, it was 3 September 1939
It caused Great Britain and France to declare war on Germany.
Great Britain and France declared war on Germany in 1939, because germany had invaded land that Great britain had to protect for france.
Great Britain and France declared war on Germany in 1939, because germany had invaded land that Great britain had to protect for france.