I NEED HELP PLEASE ILL MARK BRAINLIEST Which of the following happened first: A) A U. S.-manned space flight by Alan Shepard B) A Soviet-manned space flight with Yuri Gagarin aboard C) Three orbits of the earth by U. S. astronaut John Glen D) A lunar landing by a team of American astronauts​

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