Kulottunga I vs Zara Yaqob

During Kulottunga I's reign, the Chola hold over Sri Lanka weakened. The Sinhalese king Vijayabahu I expelled Chola forces from the island, ending Chola rule there after several decades.

Kulottunga I became the Chola emperor, succeeding his cousin Adhirajendra. He was a descendant of both the Chola and Chalukya dynasties, and his accession united the two kingdoms under his rule, marking the beginning of the Chalukya-Chola period.

Kulottunga I fought a series of wars against the Western Chalukya king Vikramaditya VI. The conflict was over control of the Vengi region and resulted in a stalemate, with neither side achieving decisive victory.

Kulottunga I implemented administrative reforms, including land revenue assessments and temple patronage. He granted lands to Brahmins and temples, particularly at Chidambaram and Kanchipuram, which strengthened his rule and religious legitimacy.

Kulottunga I led a military campaign into Kalinga (modern Odisha). The Chola army defeated the Kalinga forces and extracted tribute, extending Chola influence into the region.

Zara Yaqob led a successful military campaign against the Sultanate of Adal, capturing its ruler and temporarily halting Muslim incursions. The victory strengthened the empire's eastern frontier and boosted the emperor's prestige.

Zara Yaqob composed the 'Matshafa Berhan' (Book of Light), a religious and legal text that reformed the Ethiopian Orthodox Church. It standardized liturgy, condemned heresies, and reinforced the emperor's authority over religious matters.

Zara Yaqob convened a church council at Debre Mitmaq to address theological disputes and enforce religious uniformity. The council condemned the 'Stephanites' (followers of Abba Estifanos) and other dissident groups, leading to persecutions.

Zara Yaqob founded the church of Debre Berhan (Mount of Light) in Shewa, which became a major religious center. The church was built after a reported vision of a heavenly light, symbolizing the emperor's divine mandate.