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Period 1: 1491–1607

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Period 2: 1607–1754

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Period 3: 1754–1800

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Period 4: 1800–1848

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Period 5: 1844–1877

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Period 6: 1865–1898

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Period 7: 1890–1945

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Period 8: 1945–1980

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Period 9: 1980–Present

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