Great Britain found itself standing alone against Hitler's war machine, after the rapid collapse of France. Despite the resistance of the new prime minister, Winston Churchill, Great Britain was in a difficult position. Churchill desperately called the US for military supplies, receiving as a response, the promise from President Roosevelt to provide all possible “aid to the Allies short of war.”
The cartoonist would see people in slavery being freed. A historical event that supports this is the Cold War in Cuba. Other historical events that this supports includes the American civil war.