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The fall of the Western Roman Empire was the loss of central political control in the Western Roman Empire, a process in which the Empire failed to enforce its rule, and its vast territory was divided into several successor polities.
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Charlemagne or Charles the Great was King of the Franks from 768, King of the Lombards from 774, and Emperor of the Romans from 800. During the Early Middle Ages, Charlemagne united the majority of western and central Europe.
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The Crusades were organized by western European Christians after centuries of Muslim wars of expansion. Their primary objectives were to stop the expansion of Muslim states, to reclaim for Christianity the Holy Land in the Middle East, and to recapture territories that had formerly been Christian.
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The Magna Carta (“Great Charter”) is a document guaranteeing English political liberties that was drafted at Runnymede, a meadow by the River Thames, and signed by King John on June 15, 1215, under pressure from his rebellious barons.
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Great Famine, also called Irish Potato Famine, Great Irish Famine, or Famine of 1845–49, famine that occurred in Ireland in 1845–49 when the potato crop failed in successive years. The crop failures were caused by late blight, a disease that destroys both the leaves and the edible roots, or tubers, of the potato plant.
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The Black Death was a bubonic plague pandemic occurring in Afro-Eurasia from 1346 to 1353. It is the most fatal pandemic recorded in human history, causing the death of 75–200 million people in Eurasia and North Africa, peaking in Europe from 1347 to 1351.
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The East–West Schism was the break of communion which occurred in the 11th century between the Catholic Church and Eastern Orthodox Church.
