Politics and government -- Foreign relations -- 19 World politics -- 16 History -- 12 Economic integration 7 International agencies -- 7 Periodicals 7 more ... Periodicals -- 7 Defenses 6 Economic conditions -- 6 National security -- 5 Social conditions -- 5 Relations -- 4 Causes 3 Congresses -- 3 Diplomatic history 3 European Union 3 Foreign relations 3 Political parties -- 3 Sources -- 3 World War, 1939-1945 -- 3 Biography -- 2 Boundaries 2 Cold War 2 Congresses 2 Democracy -- 2 Ethnic relations 2 Ethnicity -- 2 European cooperation 2 European economic community -- 2 less ...