Alfonso VII of Leon vs Borommarachathirat II

Alfonso VII was crowned Emperor of All Spain in the Cathedral of Leon, claiming imperial authority over all Christian and Muslim rulers in the Iberian Peninsula. This coronation asserted Leon's supremacy over Castile, Aragon, and Navarre.

Alfonso VII led a coalition of Leon, Castile, Genoese, and Pisan forces to capture the wealthy Moorish port city of Almeria. The conquest opened the Mediterranean to Christian trade and was a major victory in the Reconquista.

Alfonso VII signed the Treaty of Tudej

Alfonso VII died, dividing his kingdom between his sons: Sancho III received Castile and Ferdinand II received Leon. This division reversed the union achieved by his father and weakened Christian power in Iberia.

Borommarachathirat II ordered the construction of Wat Ratchaburana in Ayutthaya to commemorate his two older brothers who died in a duel for the throne. The temple became a significant religious site and a symbol of royal patronage of Buddhism, featuring a prominent prang and crypt.

Borommarachathirat II led Ayutthayan forces in a successful siege of Angkor, the capital of the Khmer Empire. The city was captured and looted, leading to the Khmer abandonment of Angkor and the relocation of their capital to Phnom Penh. This event marked the decline of the Khmer Empire.

Borommarachathirat II launched a military expedition against the northern kingdom of Lanna, capturing several towns and asserting Ayutthaya's dominance in the region. The campaign resulted in a temporary tributary relationship with Lanna, expanding Ayutthaya's sphere of influence.