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1414
Birth of pope sixtus IV
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1471
Election as pope will make major infrastructure improvements in Rome
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1478
Pope sixtus launching Spanish Inquisition in Castile
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1481
Pope sixtus orders Christian prince to go against slavery
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1483
Pope sixtus officially opens introduces the new Sistine chapel that he has built
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1483
Pope sixtus launching the Spanish Inquisition
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1484
Death of pope sixtus IV