sentenced Jean Calas to death. The philosopher Voltaire then accused the Parliament of Toulouse of religious intolerance (Calas was a Protestant), gave the affair a European repercussion and succeeded in having the judgment of the parliament quashed by the King's Council, which did much damage to the reputation of the parliament. It was on this occasion that Voltaire published one of his major philosophical works: his famous Treatise on Tolerance. With the French Revolution of 1789 and the reform or suppression of all royal institutions, Toulouse lost much of its power and influence: until then the capital of the vast province of Languedoc, with a parliament ruling over an even larger territory, the city then found itself simply at the head of the single small department of Haute-Garonne. 19th century On 10 April 1814, four days after Napoleon's surrender of the French Empire to the nations of the Sixth Coalition (a fact that the two armies involved were not yet aware of), the Battle of Toulouse pitted the Hispanic-British troops of Field Marshal Wellington against the French troops of Napoleonic Marshal Soult, who, although they managed to resist, were forced to withdraw. Toulouse was thus the scene of the last Franco-British battle on French territory. Unlike most large French cities, there was no real industrial revolution in 19th century Toulouse. The most important industries were the gunpowder factory, to meet military needs, and the tobacco factory. In 1856 the railway arrived in Toulouse and the city was modernised: the ramparts were replaced by large boulevards, and major avenues such as the rue d'Alsace-Lorraine and the rue de Metz opened up the historic centre. In 1875 a flood of the Garonne devastated more than 1,000 houses and killed 200 people. It also destroyed all the bridges in Toulouse, except the Pont-Neuf. 20th and 21st centuries World War I brought to Toulouse (geographically sheltered from enemy attacks) chemical industries as well as aviation workshops (Latécoère, Dewoitine), which launched the city's aeronautical construction tradition and gave birth after the war to the famous Aéropostale, a pioneering airmail company based in Toulouse and whose epics were popularised by the novels of writers such as Joseph Kessel and Antoine de Saint-Exupéry (himself an Aéropostale pilot). In the 1920s and 1930s the rise of the Toulouse population was increased by the arrival of Italians and Spaniards fleeing the fascist regimes of their country. Then, in the