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Pilgrimage of European Christian peoples to deliver Jerusalem, the holy city of Christians (1096-1099)
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military action of the Mongol Empire to invade and conquer parts of Europe (1235-1242)
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Invented by Flavio Gioja, it was basically a tool used navigation
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War actually lasting 116 years between the kingdom of England and the kingdom of France. It is interspersed with a period of peace and ends with the French victory(1337-1453)
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It killed between 30 and 50% of Europeans and weakened several Empires such as the Byzantine Empire (1346-1352)
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Gutenberg developed the printing press and printed the first book in 1454: the "Gutenberg Bible"