Why are the States sometimes described as "laboratories of government?"

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

Answer the following question in 3-4 complete sentences. explain the arizona highways leak and its outcome.

What role did consumerism play in the early growth of capitalism?