Everything You Need to Know About Mandalore Before Mandalorian Season 3

Hundreds of years later, it is this fractured society that is giving way to a new cultural divide between the Mandalorians. Horrified by the cataclysm that ended their eons of war against the Jedi, a socio-political group formed under the banner of the New Mandalorians, a faction that advocated a rejection of Mandalore’s warlike history and warrior-clan structure in favor of a pacifist and Isolationists instituted parliamentary democracy.
A civil war broke out between the New Mandalorians and the Martial Traditionalists, who wanted to stay true to Mandalore’s warrior culture, leading to another bloody period for the planet. The death toll in the Civil War was enormous, nearly threatening to wipe out the Mandalorians entirely, but the intervention of the Galactic Republic – through the Jedi Order and particularly Knight Qui-Gon Jinn and his apprentice Obi-Wan Kenobi – aided the New Mandalorians by protect the faction’s young leader, Duchess Satine Kryze, from assassination attempts. The New Mandalorians emerged victorious from the conflict and once again overtook Mandalorian society – building biodomed-covered cities, including a new capital, Sundari, to house Kryze’s allies, while their enemies’ remaining runaways were banished to the moon of Concordia .
https://gizmodo.com/the-mandalorian-season-3-mandalore-history-star-wars-1850067182 Everything You Need to Know About Mandalore Before Mandalorian Season 3