The major event characterized by the slogan "Liberty, Equality, Fraternity" was the French Revolution. This revolutionary period, which began in 1789, aimed to overthrow the monarchy and dismantle the social hierarchies that had long oppressed the French populace. The slogan encapsulated the core ideals of the revolution, emphasizing the importance of civil liberties and social justice. It rallied citizens to fight for their rights and inspired other movements for democracy and liberation worldwide. The revolution significantly transformed French society and governance, leading to the rise of republicanism.