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The crusades were a series of religious battle fought between, the Muslims and Christians from the Medieval Age (1095- 1291)

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Wait For It...The Mongols!: Crash Course World History #17

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In 1095, the Emperor of Byzantium appealed to Pope Urban II for help. Pope Urban II asked the knights of Europe to go on a Crusade to win back Jerusalem for Christianity. In the 11th century, the Muslim Turks made it harder for Christian pilgrims to visit Jerusalem. An army of knights and nobles captured Jerusalem in 1099.

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What were the relationship like between the Christians and Muslims?

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What were the relationship like between the Christians and Muslims?

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During the Crusades (1095 until 1291) European Christians attacked and occupied this Holy land. They took control of the Muslims, the local Christians and the Jews. These Crusaders killed over 200,000 innocent civilians.

The aim:
To get control of Jerusalem from the Muslims. This was not only a period of bloodshed, hostility and violence, it was also the beginning of collective Western stereotypes of Islam and Muslims, according to some scholars.

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The Crusaders learned more about warfare and also Muslim people in education taught European students many things about science and medicine. The number system they used (1, 2, 3, 4) was more straightforward than Roman numerals (I, II, III, IV) and made calculations easier to do and we still use this system today! Western Europeans learned that the Muslim world stretched to India and traded with China; that is how trading developed/ evolved into how it is today.
Western Europeans learned about many things they had never seen before e.g: Lemons,
Apricots,
Sugar,
Silk,
Cotton and
Spices (used in cooking).
These goods were in great demand and became very expensive.