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In page Primary Chronicle:

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Chronology of major events:[1]

  • 1019: Svyatopolk was overthrown by his brother Yaroslav the Wise, whose reign brought an end to the unified kingdom of Rus but laid the foundation for the development of the written tradition in the Kievan Rus'.[citation needed]
  • 1054: After Yaroslav's death, the kingdom was split into five princedoms with Izyaslav ruling in Kiev, Svyatoslav in Chernigov, Igor in Volodymyr, Vsevolod in Pereiaslav, and Rostislav in Tmutarakan’.[citation needed]
  • 1076: Vsevolod held a victory over his four rivals and became the Grand Prince of Kiev.[citation needed]