 Complete the following phrase:  Initially founded in 1789 by anti-royalist deputies from Brittany, the club grew into a nationwide republican movement, with a membership estimated at a half million or more. The Jacobin Club was heterogeneous and included both prominent parliamentary factions of the early 1790s, The Mountain and the Girondins. In 17921793, the Girondins were more prominent in leading France when they declared war on Austria and on Prussia, overthrew King Louis XVI, and set up the French First Republic. In May 1793 the leaders of the Mountain faction led by Maximilien Robespierre succeeded in sidelining the Girondin faction and controlled the government until July 1794. Their time in government featured high levels of political violence, and for this reason the period of the JacobinMountain government is identified as the Reign of Terror. In October 1793, 21 prominent Girondins were guillotined. The Mountain-dominated government executed 17,000 opponents nationwide, as a way to suppress the 