Plans for Berlin called for the Volkshalle (People's Hall) and a triumphal arch to be built at either end of a wide boulevard. The political programme espoused by Hitler and the nsdap brought about a world war, leaving behind a devastated and impoverished Europe. Translated by Jean Steinberg. Barriers to trade led to hoarding, black markets, and uncertainty about the future. The Third Reich at War. Hitler routinely disregarded the Concordat, closing all Catholic institutions whose functions were not strictly religious. Once study of Nazi Germany was introduced into the school curriculum starting in the 1970s, people began researching the experiences of their family members. This amendment allowed Hitler and his cabinet to pass lawseven laws that violated the constitutionwithout the consent of the president or the Reichstag. Interest in Nazi Germany continues in the media and the academic world. New techniques such as telephoto lenses and cameras mounted on tracks were employed. The Degenerate Art Exhibition, organised by Goebbels, ran in Munich from July to November 1937. Food supplies were precarious; production dropped in most of Europe. International Law: A Dictionary. As part of a general public health campaign, water supplies were cleaned up, lead and mercury were removed from consumer products, and women were urged to undergo regular screenings for breast cancer. Six million people were unemployed when the Nazis took power in 1933 and by 1937 there were fewer than a million.