What is the Causes of sectional differences.

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attacks by the seljuk. a devastating blow to the entire byzantine world was dealt by christian crusaders from the west. the venetians were eager to destroy byzantine power and offered the crusaders money, ships, and part of the spoils of war.

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the four most common systems of greek government were: democracy - rule by the people (male citizens). monarchy - rule by an individual who had inherited his role. oligarchy - rule by a select group of individuals.