1939 Great Britain and France declared war on Germany. On the same day Belgium declared its neutrality and President Roosevelt, in a fireside chat, declared the U.S. to be neutral.

• 1939年，英国和法国对德国宣战。同一天，比利时宣布他保持中立，而且罗斯福总统在闲谈中说美国也保持中立。