United States
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
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Religious Studies, Education, Psychology, History, Literature, Philosophy, Entire Library
...Americans worked in service industries, a proportion...Health and Human Services; Education; Housing...cultivation, and as the soil depleted he continued...favored civil service reforms, and after...legislation for the conservation of natural resources...States with large service, trade, and high...ever on American soil, a bomb was exploded...