Ivan Asen II, Tsar (Second Bulgarian Empire) : All Data

Ivan Asen II was the Tsar of the Second Bulgarian Empire from 1218 to 1241. During his reign, he successfully expanded the empire's territory and influence. One of the most significant wars that occurred during his tenure was the Battle of Klokotnitsa in 1230, where Ivan Asen II led the Bulgarian forces to a decisive victory against the Latin Empire, securing his rule and establishing Bulgaria as a regional power. Another notable conflict was the Byzantine-Bulgarian War of 1235-1237, which resulted in a Bulgarian victory and further territorial gains. Ivan Asen II's reign marked a period of military success and territorial expansion for the Second Bulgarian Empire.