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313
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Edict of Milan grants official toleration of Christianity in the Roman Empire
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17 Jan 395
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Death of Theodosius I in Milan; body is brought back to Constantinople for burial
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1155
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Frederick Barbarossa crowned king of Italy in San Michele Maggiore
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1483
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Leonardo da Vinci paints the Virgin of the Rocks
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25 Sep 1599
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Birth of Francesco Borromini
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1800
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Invention of the battery
