It split the Empire into two separate halves>
According to the Wikipedia, Saladin "was the first sultan of Egypt and Syria and the founder of the Ayyubid dynasty." He was a Sunni Muslim, "who led his military against the Crusader states in the Levant."
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Marxism is what the modern day guild is called.
Monks contributed to the development of the Western culture in the Byzantine empire with the <u>preservation of Greek and Roman works</u>.