Great Britain and the United States were allies to defeat Germany so the US would not attack Great Britain.
italy
Great Britain declared war on Germany in response to there invasion of Belgium.
Germany invaded Belgium. Britain had a defense treaty with Belgium. After the invasion, Britain issued an ultimatum stating that if Germany didn't withdraw from Belgium, Britain would declare war. Germany didn't listen and Britain entered World War I.
Poland.
You don't mention the options you were given, but the formal reason was that Britain was bound by the Treaty of London of 1839, in which it undertook to 'defend' Belgium if it were ever attacked. The British explicitely mentioned this Treaty in their war declaration against Germany.
yes
To response to Germany invasion of Belgium.
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.
Why did Great Britain declare war on Germany? Great Britain declared war on Germany because German tanks forced their way across the Polish border on august 4th 1914
The English did not declare war on Germany, Great Britaindeclared war on Germany because Germany had invaded other European countries with which Great Britain had a mutual defense agreement.
The event was Germany invading Poland.
Germany was TOO imperialistic, and they forced Britain into the war.
Because of its Loyalty to Great Britain.
England did not declare war on Germany. Great Britain did. England is not an independent nation. Nonetheless the Answer is still Poland.
When Germany invaded Poland, France and England declared war on Germany, this started WWll
It caused Great Britain and France to declare war on Germany.