Jin general Puxian Wannu rebels against the Jin Dynasty and founds the Dazhen kingdom in Dongjing (Liaoyang) in 1215 while Mukhali is invading Northern China.

He assumes the title Tianwang (lit., Heavenly King) and the era name Tiantai.

Puxian Wannu allies with the Mongols in order to secure his position.

Lembitu's Lehola (Leal) stronghold (situated near the present town of Suure-Jaani) is taken by Germans in 1215 and Lembitu is taken prisoner.

(He will be released two years later.)

Emperor Henry, an enlightened ruler, strives to reconcile his Greek subjects to what they regard as the disgrace of Latin rule, though the excesses of the Latin churchmen make this virtually impossible.

His refusal to cede Greek church lands to the papacy causes a dispute with Pope Innocent III.

Theodore now annexes much of the territory of Trebizond.

Iltutmish, preoccupied with subjugating Hindu chiefs in India, waits for his rivals to come to him.

One of these dissident slave-generals, Elduz, is driven from Ghazni by the forces of the Shah of Khwarezm into the Punjab, where he lays claim to the throne of Delhi as the heir to Muhammad of Ghor.

Iltutmish refuses, stating, “the dominion of the world is enjoyed by the one who possesses the greatest strength.

The principle of hereditary succession is not extinct but long ago destiny abolished this custom.”

Sri Lankan power has gradually decayed following the reign of Parākramabāhu I. Kalinga Magha, a South Indian of uncertain origins, identified as the founder of the Jaffna kingdom, invades in 1215 and captures the Kingdom of Polonnaruwa with a twenty-four thousand-man army, sailing six hundred and ninety nautical miles on one hundred large ships from Kalinga.

Unlike the previous invaders, he loots, ransacks, and destroys beyond recovery everything in the ancient Anuradhapura and Polonnaruwa Kingdoms.

The Rebuilding of Chartres Cathedral (1194–1215): A Masterpiece of High Gothic Architecture

Following the devastating fire of 1194, which destroyed most of Bishop Fulbert's cathedral, Chartres Cathedral underwent a major reconstruction, transforming it into one of the greatest Gothic cathedrals of medieval Europe. While the western towers, Royal Portal, and old crypt remained intact, the choir and nave were entirely rebuilt, marking a significant evolution in Gothic architecture and sculpture.

Rapid Construction and Key Milestones (1194–1215)

• Construction proceeded quickly, with approximately 300 workers on site at any time.
• 1206: The south porch and its sculptural program were installed.
• 1215:
  • The north porch was completed.
  • The western rose window was installed.
  • The south transept portals, completed around this time, showcased a new level of naturalism in Gothic sculpture.

High Gothic Sculpture: The Evolution of the Jamb Figures

• The sculptural program on the south transept portals (c. 1215) marked a shift toward greater naturalism, reflecting the stylistic developments of High Gothic art.
• Compared to the earlier columnar figures of the Royal Portal, the new jamb statues:
  • Interacted more dynamically with their space, appearing less rigid and more mobile.
  • Their axes followed a subtle S-curve, a departure from the strict verticality of earlier figures.
  • Displayed more relaxed and expressive poses, suggesting a greater awareness of the human body’s natural movement.

The Legacy of the Rebuilt Chartres Cathedral

• The reconstruction of Chartres set the standard for High Gothic architecture, influencing cathedrals such as Reims and Amiens.
• The cathedral’s sculptural program evolved significantly, transitioning from stiff, column-like figures to more naturalistic depictions of the human form.
• The speed and efficiency of construction demonstrated the organizational prowess of medieval builders, allowing Chartres to be completed in a remarkably short time.

By 1215, the rebuilding of Chartres Cathedral was well underway, with its sculptural innovations and architectural grandeur reinforcing its status as one of the crowning achievements of Gothic art.

The Knights Templar order is very powerful in England, with the Master of the Temple sitting in parliament as primus baro (the first baron of the realm).

The Temple compound in London is regularly used as a residence by kings and by legates of the Pope.

The Temple also served as an early depository bank, sometimes in defiance of the Crown's wishes to seize the funds of nobles who had entrusted their wealth there.

The independence and wealth of the order throughout Europe is considered by most historians to have been the primary cause of its eventual downfall.

William Marshall (who is buried in the nave next to his sons, under one of the nine marble effigies of medieval knights there) serves in January 1215 as a negotiator during a meeting in the Temple between King John and the barons, who demand that John uphold the rights enshrined in the Coronation Charter of his predecessor Richard I. William swears on behalf of the king that the grievances of the barons will be addressed in the summer, leading to John's signing of Magna Carta in June.

Castelnaud is recaptured in 1215 by Montfort, and ...

…the crusaders enters Toulouse.

Following the siege of Lavaur, Bishop Folques had traveled north to France, where he had preached the Crusade alongside Guy of les Vaux-de-Cernay.

He had then returned to the south, participating in the Council of Pamiers in November 1212, in the Council of Lavaur in January 1213, in the meeting with Peter II of Aragon in January 1213, at the Battle of Muret in September 1213, and at the Council of Montpellier in January 1215.

There he had been instructed by the Papal legate, Peter of Benevento, to take possession of the Château Narbonnais, the Count's residence, at Toulouse; thus, he finally returns to the city in February 1215.