On, April 20, 1792, France declared war on Austria. Revolutions only wanted war because they thought war would unify the country.
King Louis XVI was executed by guillotine in the Place de la Revolution in Paris in January 21 1793. He was guilty for treason.
The Regin of Terror started on September 5, 1793.The Reign of Terror begins as Robespierre, the leader of the Committee of Public Safety, declares that terror will be the "order of the day" for the revolutionary government