| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Mieszko II |
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| or Mieczyslaw II, 9901034, king of Poland (102534), son and successor of Boleslaus I. His reign was marked by internal and external strife. Moravia was lost to Bohemia, Lusatia to Germany, and sections of Ruthenia to Kiev. The kingdom was in chaos when it passed to his son, Casimir I. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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