The decades of twentieth-century America
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1)
America in the 1900s
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2)
America in the 1910s
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3)
America in the 1920s
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4)
America in the 1930s
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5)
America in the 1940s
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7)
America in the 1970s
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8)
America in the 1980s
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9)
America in the 1990s
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