supplies and assistance to the Nationalist forces of General Francisco Franco in the Spanish Civil War, which began in July 1936. On the night of 27 February 1933, the Reichstag building was set afire. Following the invasion of Poland, 2,500 Roma and Sinti people were deported from Germany to the General Government, where they were imprisoned in labour camps. In the areas of Poland annexed in 1939, the Nazis instigated a brutal suppression and systematic dismantling of the Catholic Church. Perfunctory efforts were made to curb air pollution, but little enforcement of existing legislation was undertaken once the war began. Areas placed under German administration included the Protectorate of Bohemia and Moravia, Reichskommissariat Ostland (encompassing the Baltic states and Belarus and Reichskommissariat Ukraine.