 Around the same time, competing against Aire-sur-la-Lys, Calais and Saint-Omer, Arras won the prefecture of Pas-de-Calais.From September 1793 to July 1794, during the Reign of Terror, the city was under the supervision of Joseph Lebon who implemented food restrictions, ordered 400 executions and destroyed several religious monuments including the Arras Cathedral and the Abbey of St. Vaast.Arras' demography and economic activity remained the same throughout the French Revolution while Lille's grew exponentially.