Britain also needed money to pay for its war debts. The King and Parliament believed they had the right to tax the colonies. ... They protested, saying that these taxes violated their rights as British citizens. The colonists started to resist by boycotting, or not buying, British goods.
I’m guessing it’s B. Battle of Britain because the speech was on June 4 1940 and the Battle of Britain started July 10 of the same year. The Battle of Normandy was in 1944. Battle of Stalingrad in Russia. Pearl Harbor in US