King John vs King Uijong of Goryeo

King Philip II of France conquered Normandy from King John. John's failure to defend the duchy resulted in the loss of the ancestral lands of the English crown in France. This shifted the focus of English kings toward consolidating power in Britain.

Pope Innocent III placed England under interdict after John refused to accept Stephen Langton as Archbishop of Canterbury. Church services were suspended across the kingdom. John retaliated by confiscating church property, deepening the conflict with the papacy.

Rebellious barons, angered by John's refusal to abide by Magna Carta, invited Prince Louis of France to claim the English throne. John fought a series of campaigns across England. The war continued after John's death in 1216, ending with the Treaty of Lambeth in 1217.

King John sealed Magna Carta at Runnymede after negotiations with rebellious barons. The charter limited royal authority, established due process, and guaranteed certain legal rights. It became a foundational document for constitutional law in England and later globally.

King Uijong's reign before the coup was characterized by lavish spending on palaces, gardens, and entertainment. He neglected state affairs and surrounded himself with pleasure-seeking courtiers. This extravagance alienated the military and contributed to the coup.

General Jeong Jung-bu led a military coup against King Uijong's civil-dominated government. The king was deposed and exiled to Geojedo. Many civil officials were killed. This coup ended the civil bureaucracy's supremacy and began a century of military rule in Goryeo.

Following the coup, the military regime targeted Buddhist institutions that had been closely tied to the civil bureaucracy. Several temples were destroyed or looted, and monks were persecuted. This marked a decline in state patronage of Buddhism.

After being deposed, King Uijong was exiled to Geojedo Island. In 1173, fearing a restoration attempt, the military regime sent assassins who killed the former king. His death solidified the military's control and eliminated a potential rallying point for loyalists.