Answer:
 A)  "Allies During World War II"
Explanation:
The BEST title for this list would be "Allies During World War II". The United States was the last to join the group, doing so only after Japan attacked Pearl Harbor in December, 1941. The U.S. was the only country in the list that was subjected to a significant Japanese attack. Also, all of the countries were basically allies during World War I, though the Soviet Union was still "Russia" in those days.
