Flight to Varennes
Influenced by classical liberalism and the concepts of democracy, human rights and Montesquieu's separation of powers, the Girondins initially supported the constitutional monarchy, but after the Flight to Varennes in which Louis XVI tried to flee Paris in order to start a counter-revolution the Girondins became mostly republicans, with a royalist minority. Like the Jacobins, they were also influenced by the writings of Jean-Jacques Rousseau.