Louis IX (Saint Louis): Regency, Royal Justice and Crusades (1226–1270) · HIGH MIDDLE AGES
The crusade against the Albigensians had transformed the south. After the phase of conquests and sieges, one challenge emerged: turning armed intervention into stable political order.
The Treaty of Paris (1229) marked a turning point: it organised the submission of the County of Toulouse and more firmly inscribed the Midi within Capetian suzerainty. Peace did not erase tensions, but it changed their nature — the conflict became more administrative and legal than strictly military.