USA HISTORY

Detailed explanation-1: -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-2: -The invasion of Poland (1 September – 6 October 1939) was a joint attack on the Republic of Poland by Nazi Germany, the Slovak Republic, and the Soviet Union; which marked the beginning of World War II.

Detailed explanation-3: -Germany invaded Poland to regain lost territory and ultimately rule their neighbor to the east. The German invasion of Poland was a primer on how Hitler intended to wage war–what would become the “blitzkrieg” strategy.

Detailed explanation-4: -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-5: -1, 1939, the British gave Nazi dictator Adolf Hitler an ultimatum: pull out of Poland, or else. Hitler ignored the demand, and two days later, on Sept. 3, 1939, Britain and France declared war.