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there was a lot conflict around the crusades like The pope thought that killing  non Christians was not a sin. The pope also thought that if you fight your will be forgiven all your past sins and the crusades and the muslims were fighting over the holy land and also during this time period there were a lot of religious wars (
Pope Urban II Orders First Crusade - HISTORY

https://www.history.com › this-day-in-history › pope-ur...

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conflict: golden age of islam (622-1258) 

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conflict: golden age of islam (622-1258) 

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the conflict of the golden age of islam: The use of geometry in Islamic art was an expression of the idea that unity and order exists everywhere and at all times. Interlacement, which was another type of arabesque, was made of geometrical patterns drawn inside a circle and repeated several times  some people have different opinions about it and also the golden age of islam ended 1258 CE
led by mongols huglag khan invaded bag dad and destroyed
and destroyed  the house of wisdom
Siege of Baghdad (1258) - Wikipedia

https://en.wikipedia.org › wiki › Siege_of_Baghdad_(1...

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the conflict behind mesoamerican civilizations is that Transportation of goods , people and information

Altered the climate

For farming (warmer

Temperatures ) and people didn't like the temperature sometimes depending of the weather. 21,000 bce and the spanish conquer the mesoamericans and that ended the whole conversy
Hernán Cortés - Biography, Facts & Accomplishments ...

https://www.history.com › exploration › hernan-cortes

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the printing press was made by gutenberg and by far it was one of gutenberg's influential inventions and making book on the printing press took a lot of time and money but in the end it worked out perfectly.

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The airplane change society because it was another way to travel if family or vacation was far and to this day the coming up with new ideas for airplanes.

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steam engines was one of the other ways to travel and one of the first ways the travel because back then there weren't air planes.