The U.S. State Department Central Files are the definitive source of American diplomatic reporting on political, military, social, and economic developments throughout the world in the 20th century. Concentrating exclusively on those Central Files that have not been microfilmed by the National Archives or other publishers, UPA's microfilm editions of the Central Files nonetheless dwarf the State Department's very selective volumes of the Foreign Relations of the United States (FRUS). Containing less than one percent of the material in the Central Files, FRUS focuses on U.S. relations with individual countries but does not include coverage of many of the key topics to which the majority of the original files are devoted. Each part of the Central Files contains a wide range of materials from U.S. diplomats in foreign countries: special reports on political and military affairs; studies and statistics on socioeconomic matters; interviews and minutes of meetings with foreign government officials; court proceedings and other legal documents; full texts of important letters, instructions, and cables sent and received by U.S. diplomatic personnel; voluminous reports and translations from foreign journals and newspapers; and countless translations of high-level foreign government documents. The years 1930-1949 were the most momentous in Germany's long history. Out of the welter of coalition politics in the early 1930s, Hitler emerged with the chancellorship for himself and a compliant Reichstag for the future designs of his party. Taking advantage of Germany's economic dislocation-depression, unemployment, and inflation-the Nazis proceeded to carry through a revolution in domestic and foreign affairs. The centralization of power in the national government enabled the National Socialists to create a police state marked by the suppression of trade unions and opposition political parties; the regimentation of educational, artistic, and religious institutions; and control of the media and the army. Furthermore, religious and racial persecution intensified during the mid- and late-1930s as Hitler tightened his grip on the nation.