A ruler of this state once reversed his monastic abdication to lead a coup against his son, who had reverted to paganism. During the decline of this polity, a pig farmer named Ivaylo occupied the capital for three years. That was followed by the rule of the weak Terter and Shishman dynasties. This states was overrun following the Battle of Velbuzhd, where it lost to Stefan Dušan. Founded by the sons of (*) Kubrat, rulers of its Asen Dynasty included Kaloyan. This state's leader Tervel was an ally of Justinian II, though later relations with the Byazantine Empire soured and Nicephorus I's skull was made into a goblet by this state's ruler Krum. It was Christianized under Boris I, and Simeon I built up its tile-working capital of Preslav, though this khanate's best-known ruler may be Samuel, who died of shock after seeing the soldiers blinded by his Byzantine opponent For 10 points, name this medieval empire where
A ruler of this state once reversed his monastic abdication to lead a coup against his son, who had reverted to paganism. During the decline of this polity, a pig farmer named Ivaylo occupied the capital for three years. That was followed by the rule of the weak Terter and Shishman dynasties. This states was overrun following the Battle of Velbuzhd, where it lost to Stefan Dušan. Founded by the sons of (*) Kubrat, rulers of its Asen Dynasty included Kaloyan. This state's leader Tervel was an ally of Justinian II, though later relations with the Byazantine Empire soured and Nicephorus I's skull was made into a goblet by this state's ruler Krum. It was Christianized under Boris I, and Simeon I built up its tile-working capital of Preslav, though this khanate's best-known ruler may be Samuel, who died of shock after seeing the soldiers blinded by his Byzantine opponent For 10 points, name this medieval empire where the Bogomil heresy arose, and whose inhabitants were notably "slain" by Basil II.
A ruler of this state once reversed his monastic abdication to lead a coup against his son, who had reverted to paganism.
{Bulgarian} empire