Which event brought the United States into World War II?

• A. Battle of Wake Island
• B. Pearl Harbor
• C. D-Day Normandy
• D. Battle of Midway

Answer: (B)

Understanding when the United States entered World War II hinges on recognizing the event that directly drew the nation into active war. The attack on Pearl Harbor by Japan on December 7, 1941, targeted ships and airfields at the Pearl Harbor naval base, inflicting heavy damage and shifting public opinion toward wartime action. The United States declared war on Japan the next day, and shortly after, Germany and Italy declared war on the United States, bringing the U.S. into both the Pacific and European theaters. The other events are significant battles or operations that occurred after the United States was already at war, such as Midway, a pivotal 1942 battle, and D-Day, the 1944 invasion of Normandy.