What prompted the munich conference of 1938?

In hand stitched dreams which clue tells you that the historical period of the events will be important in the story

N1947, the united nations create a country

Which of the following arguments decided the debate over using the atomic bomb against japan in 1945? using the bomb would destroy the armaments still available to japanese forces in japan. using the bomb would demonstrate the power of the united states to the entire world. using the bomb would shorten the war and avoid heavy casualties among invading troops. using the bomb would enable allied forces to invade and take over the japanese mainland