The final phase of Bulgaria's second Balkan…
1108 CE to 1251 CE
The final phase of Bulgaria's second Balkan dominance is the reign of Kaloian's successor, Ivan Asen II (1218-41).
In this period, culture continues to flourish, but political instability again threatens.
After the death of Ivan Asen II, internal and external political strife intensify.
Sensing weakness, the Tatars begin what will; be sixty years of raids in 1241, the Byzantines retake parts of the Second Bulgarian Empire, and the Magyars again advance.