-
-
To honor their guarantee of Poland's borders.
-
-
The Polish government flees into exile.
-
-
-
-
-
Germany, Italy, Hungary, and Bulgaria invade and dismember Yugoslavia.
-
Nazi Germany and the Axis Powers invade the Soviet Union.
-
Japanese planes bomb Pearl Harbor, Hawaii.
-
-
-
-
Allied troops land on the beaches of Normandy.
-
-
-
-