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The Fall of the Western Roman Empire (also called Fall of the Roman Empire or Fall of Rome) was the process of decline in the Western Roman Empire in which the Empire failed to enforce its rule, and its vast territory was divided into several successor polities.
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In his role as a zealous defender of Christianity, Charlemagne gave money and land to the Christian church and protected the popes.
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The First Crusade (1096–1099) was the first of a number of crusades that attempted to recapture the Holy Land, called for by Pope Urban II at the Council of Clermont in 1095.
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was meant as a peace treaty between King John and his subjects, and demanded that every person had to obey the law, including the king
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The Great Famine was caused by a failure of the potato crop, which many people relied on for most of their nutrition. A disease called late blight destroyed the leaves and edible roots of the potato plants in successive years from 1845 to 1849.
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From there, it was most likely carried by fleas living on the black rats that traveled on all merchant ships, spreading throughout the Mediterranean Basin and Europe. The Black Death is estimated to have killed 30% to 60% of Europe's population. ... The plague recurred as outbreaks in Europe until the 19th century
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The East–West Schism, also called the Great Schism and the Schism of 1054, was the break of communion between what are now the Roman Catholic Church and Eastern Orthodox Churches, which had lasted until the 11th century.