them amid great slaughter on 16 June; the next day, they stormed and razed the town. It was left derelict for three years before rebuilding began in 1429. Ústí nad Labem was again burned down in 1583 and was sacked by the Swedes in 1639 amid the Thirty Years' War. It also suffered grievously during the Seven Years' War and was near the 1813 Battle of Kulm between France and the alliance of Austria, Prussia, and Russia during the Napoleonic Wars. As late as 1830, its population was only 1400. As part of the Kingdom of Bohemia, it was eventually incorporated into Austria and heavily industrialized over the 19th century. After the Compromise of 1867, it headed the Aussig District, one of Austrian Bohemia's 94 District Commissions (). In the 1870s, with only 11,000 people, it was a major producer of woolen goods, linen, paper, ships, and chemicals and carried on a large trade in grain, fruit, mineral water, lumber, and coal. By 1900, large-scale immigration had boosted the population to nearly 40,000, mostly German, and added glassworking and stone to its trades. The local river port became the busiest in the entire Austro-Hungarian Empire, surpassing even the seaport in Trieste. The factories of Aussig—as it was then known—were an early center of the National Socialism ("Nazi") movement. The German Workers' Party in Austria () was founded on 15 November 1903 and later gave rise to the Sudeten German Party and Austrian National Socialism. Their books continued to be printed in Ústí nad Labem even after the formation of Czechoslovakia in 1918. During the 1930 census, Ústí nad Labem was home to 43,793 residents: 32,878 considered German, 8,735 Czech or Slovak, 222 Jews, 16 Russians, and 11 Hungarians. Ústí nad Labem was ceded to Nazi Germany with the rest of the Sudetenland in October 1938 under the terms of the Munich Agreement and placed under the administration of the Regierungsbezirk Aussig of Reichsgau Sudetenland. On New Year's Eve of that year, the Nazis burnt down the local synagogue; a meat factory was later raised in its place. The Jewish community in Ústí nad Labem was mostly exterminated over the course of World War II amid the Holocaust. In April 1945, the city was severely bombed by the Allies. Shortly after the war ended, on 31 July 1945, an explosion of the local ammunition depot triggered a pogrom of the German