Answer:A B C
Explanation:During the interwar period, there were approximately 3,000,000 Sudeten and other Germans in Czechoslovakia. With its German majority, the Sudetenland later became a feud between Germany and Czechoslovakia, and in 1938 it took part in the Munich Conference, succumbing to Adolf Hitler, who moved it to Germany. Sudeten Germans Sudeten Germans marching in Carlsbad, Germany, April 1937. Encyclopedia Britannica Inc.
On September 1, 1939, at 04:45, the army of Nazi Germany, a joint vassal state of Slovakia, invaded Poland. Britain and France gave Nazi Germany a 48-hour warning to withdraw from Polish territory. Britain and France declared war on Germany on September 3, 1939, because Germany did not heed the warnings of Britain and France. None of the participating countries estimated that the war would exceed the scale of the First World War.
On December 7, 1941, the Imperial Japanese Navy attacked the United States, bombing battleships and military targets at Pearl Harbor, Hawaii. More than 350 Japanese aircraft carried out two waves of attacks on the Pearl Harbor naval base, dropping armor-piercing bombs and firing torpedoes at American battleships and cruisers. Unprepared, the U.S. military woke up to the loud noise of the explosion and hurriedly acted in self-defense.
