Answer:
The Crusades
With the Seijuk Turks of central Asia bearing down on Constantinople, Emperor Alexius I turned to the West for help, resulting in the declaration of “holy war” by Pope Urban II at Clermont, France, that began the First Crusade
As a result of the Peloponnesian War, Sparta "d<span>ominated Greece for a number of years," since the war had been initiated by Sparta in order to "check" the growing rise and influence of Greece (specifically Athens). </span>
Answer: a central government is national government from a single important city rather than local government.
Explanation: its purpose is to oversees finance, commerce, national defense, foreign affairs, and all laws 'necessary and proper'.
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