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The Byzantine aristocracy gains control over the government and begins to limit the freedom of the peasantry, there by beginning the destruction of the economic base of Byzantine civilization. People started to go after this event happened.
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German Emperor Henry III arrives in Italy and names a German monastic reformer as pope. The series of reforming popes that follow enacts decrees against simony and clerical marriage.
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The period from 1050 to 1300 is generally considered the High Middle Ages. Western Europe rises as a great power with only China equaling it in political, economic and cultural flourishing. It also witnesses profound religious and intellectual change, including the organization of the papal monarchy.
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The reforming popes, following from the acts of Henry III, issue a decree on papal elections which gives the cardinals sole right of appointing new popes. This decree allows papal elections to escape the whims of political leaders.
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The Seljuk Turks of Islam defeat the Byzantines at Manzikert in Asia Minor and reconquer most of the eastern Byzantine provinces. he war was pretty ugly.
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The crusaders of the First Crusade capture Jerusalem, killing its Muslim inhabitants. The Crusaders divide their new territories into four principalities.
