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| | Russia - MSN Encarta |
 | | A large factor in this investiture of Moscow as a holy, imperial city was the marriage in 1472 of Grand Prince Ivan III Vasilyevich to Zoë (Sophia), niece of the last Byzantine emperor. |
 | | His half-brother, Peter the Great, was named Tsar (Peter I), but Peter’s older half-sister, Sophia Alekseyevna, succeeded in having her own brother, the weak-minded Ivan V, declared Senior Co-Ruler, with herself as Regent. |
 | | After an attempt to deprive Peter of his right to the throne and, this failing, to assassinate both him and his mother, Sophia was forced to resign all power in 1689. |
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