As dictated by a promise made, France and Britain immediately declared war on Germany after the invasion of Poland.
It didn't. Germany started invading other countries which made France and the UK declare war on Germany.
The German invasion of Poland on September 1, 1939.
Great Britain and France declared war on Germany on September 3, 1939, in response to Germany's invasion of Poland on September 1, 1939. This invasion violated agreements made by Germany to respect Polish sovereignty, and both Britain and France had pledged to support Poland in the event of an attack. The declaration marked the beginning of World War II in Europe.
because Neville chamberlain sent a message to Hitler by radio telling him if he didn't get out of Poland by 11 am on September 1st we would declare war he did not get out of Poland so we did declare war.
The great depression was a major factor because Britain and France could really afford another war. Also Britain kept having hollow treaties with Germany and that made it impossible for France to declare war because if they did they would not be able to attack Germany without help from Britain. Also France had lost millions of men in world war 1 and the people of France were reluctant to fight again even though they did eventually.
Germany invaded Belgium on August 4, 1914, as part of its strategy to attack France through the north. This violation of Belgian neutrality prompted Britain to declare war on Germany, while France was already allied with Russia and bound to enter the conflict. Consequently, the invasion of Belgium was a key trigger that led both Britain and France to enter World War I.
Germany was TOO imperialistic, and they forced Britain into the war.
Germany invaded Poland which made Britain and Spain declare war
When Germany invaded Poland, Britain and France had an agreement with Poland to come to Poland's aid should the country ever be invaded. As Germany refused to withdraw from Poland, Britain and France declared war against Germany.
Poland, in late August 1939.
Congress wanted France to declare war on Britain. France wanted help, and america needed it. Before they did help America, they made America prove they could win.