The Seventh Crusade was a crusade led by Louis IX of France from 1248 to 1254. Louis' Christian army was defeated by the Ayyubid army led by Fakhr al-Din ibn Shaykh al-Shuyukh and their allies, the Bahriyya Mamluks, led by Faris ad-Din Aktai, Baibars al-Bunduqdari, Qutuz, Aybak and Qalawun.
When Napoleon was taken down, the use of serfs (or slaves) was also diminished. After the defeat of Napoleon democracy rose up, and the use of slaves fell.
Centrism is support of a balance between social hierarchy and social equality. Centrists are not strongly politically left or right wing.
They identified with them more than the British