This is just a basic answer, but after the attack on Pearl Harbor they were pretty upset. They began to attack Japan, and even to used nuclear weapons. They warned Japan about this but they didn't believe them. It was a hard fought war but the U.S won.
Answer: Axis Powers ( Germany, Japan, Italy)
Allie (France, Great Britain, the United States, the Soviet Union, and, to a lesser extent, China)
Explanation: