Which of the following countries declared war on Germany immediately after the event described in the speech below?
Until four-thirty this morning I had hoped against hope that some miracle would prevent a devastating war in Europe and bring to an end the invasion of Poland by Germany. For four long years a succession of actual wars and constant crises have shaken the entire world and have threatened in each case to bring on the gigantic conflict which is today unhappily a fact.1
—Franklin D. Roosevelt, September 3, 1939
A. The Soviet Union
B. The United States
C. Japan
D. Great Britain