The correct response to the bombing of Pearl Harbor is: It caused American forces to join Allied powers in World War II.
Explanation:
1. The bombing of Pearl Harbor by the Japanese on December 7, 1941, was a surprise military strike that resulted in significant damage to the U.S. Pacific Fleet.
2. Following this attack, the United States declared war on Japan, marking its entry into World War II.
3. As a result of the attack on Pearl Harbor, the U.S. officially joined the Allied powers in their fight against the Axis powers, which included countries like Germany, Italy, and Japan.
4. This decision to join the Allies was a pivotal moment in World War II, as the United States played a crucial role in the eventual defeat of the Axis powers.
By joining the Allied powers, the United States contributed significantly to the eventual outcome of World War II and played a key role in shaping the post-war world order.