Britain and France declared war on Germany primarily because of option b) Germany invaded Poland. This invasion took place on September 1, 1939, and prompted Britain and France to declare war on Germany on September 3, 1939, as they had commitments to protect Poland from aggression.
Why did Britain and France declare war on Germany?
a Germany invaded Austria.
b Germany invaded Poland.
c Germany wanted to take over the United States.
d Germany set up an army in Rhineland by France.
1 answer