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his succcessor: Béla IV
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before the Mongol Invasion
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went back to Magna Hungaria to find the ancestors of the Hungarians
on his way back he brought new about the upcoming Tartar Invasion -
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in April
Mongol victory
Béla IV fled to Dalmatia -
the recontructions of the country after the Mongol Invasion
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Khan Ogoday died and Batu left to fight for the throne
Mongol war tatctic: attack - retreat - final attack -
Béla IV issued a Royal Decree that inentified the Royal Servants as nobles: they became the lesser nobility