Google Drive — 1057 - 1160 Вђ“

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The unity collapsed into a series of fratricidal wars. Prince Oleg "The Misery-Maker" Svyatoslavich famously used Polovtsian mercenaries to attack his own kin, devastating the countryside. This era was defined by the "Lubech Congress" in 1097, where the princes finally met to agree on a new rule: "Let each keep his own patrimony," effectively ending the idea of a single united state. 1057 - 1160 – Google Drive

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After the death of Monomakh’s son, Mstislav the Great, in 1132, the central authority of Kiev vanished entirely. New power centers emerged in Vladimir-Suzdal (under Yuri Dolgorukiy ) and Novgorod . By 1160, Kiev had become a mere symbol—a "prize" to be captured by rival princes rather than a seat of real government. This set the stage for the weakened state that would eventually face the Mongol invasion. How to find your specific document

Following the death of Grand Prince Yaroslav the Wise, his sons initially shared power in a "Triumvirate." By 1057, the fragile peace held, but the seeds of discord were sown. The nomadic Polovtsy (Cumans) began their first major incursions into the southern steppes, forcing the princes to choose between unity and personal ambition.