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Some consider this to have been the start of the plague
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Due to failing harvests, excessive rainfall combined with cattle and sheep diseases, famine falls upon Europe
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"The Merchant's Handbook" by an Italian author reports that the road from China to the Black Sea is safe to travel by day and night increasing travel via the Black Sea. Mongol troops are infected and begin to use the Black Sea for travel.
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In Constantinople, Sicily, Genoa and Alexandria
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Reaches France, England, Tunisia and Mecca. The Jews are blamed for the plague and the Pope issues official statements declaring their innocence.
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Italian humanist Boccaccio's book, The Decameron, describes the Black Death in Florence.
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Mortality especially high amoung children. There are local, regional, and sometimes wider recurrences of the plague every 5-12 years or so.
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For ships found infected with the plague
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In 1391 violent pogroms broke out all over Spain where there were Jewish communities. Thousands of Jews were murdered; Jewish women and children were sold as slaves to Muslims, most synagogues and many homes and businesses were burnt to the ground.