USA HISTORY

Detailed explanation-1: -On September 3, 1939, in response to Hitler’s invasion of Poland, Britain and France, both allies of the overrun nation declare war on Germany.

Detailed explanation-2: -German troops invaded Poland on September 1, 1939, triggering World War II. In response to German aggression, Great Britain and France declared war on Nazi Germany.

Detailed explanation-3: -Britain and France declared war on Germany on 3 September 1939, two days after the German invasion of Poland. The guarantees given to Poland by Britain and France marked the end of the policy of appeasement.

Detailed explanation-4: -Hitler’s invasion of Poland in September 1939 drove Great Britain and France to declare war on Germany and World War II began. Over the next six years, the conflict would take more lives and destroy more land and property around the globe than any previous war.

Detailed explanation-5: -After weeks of speculation and mounting tension, Great Britain declared war on Germany on 4 August 1914.