In this context, according to FDR, the threat to "American civilization" and the world comes from Nazi Germany and the Axis powers. These countries posed a significant threat to the free nations resisting aggression during World War II.
FDR, which stands for Franklin D. Roosevelt, was the President of the United States during this period. He recognized the danger that Nazi Germany and its allies in the Axis powers, such as Italy and Japan, posed to not only the United States but also to the world at large.
Nazi Germany, led by Adolf Hitler, aimed to expand its territory aggressively through military conquests, imposing its ideology of fascism and committing atrocities against various populations. The Axis powers, with their expansionist goals and aggressive military strategies, posed a direct threat to the freedom and security of other nations.
Therefore, in FDR's view, the primary threat to "American civilization" and the world during that time was posed by Nazi Germany and the Axis powers, rather than other nations like Great Britain and the rest of Europe, or nations near Germany such as Sweden and Russia.
