Politics and government -- Foreign relations -- 3 History -- 3 20th century -- 1 Anti-Nazi movement -- 1 Bureaucracy -- 1 Church and state -- 1 more ... Civilization -- 1 Congresses -- 1 Economic conditions -- 1 Handbooks, manuals, etc 1 Handbooks, manuals, etc. -- 1 History 1 Influence 1 National security -- 1 National socialism -- 1 Peacekeeping -- 1 Political parties -- 1 Politics and government 1 Psychological aspect 1 Reconstruction (1914-1939) 1 Social conditions -- 1 World War, 1914-1918 -- 1 World war, 1914-1918 -- 1 less ...