Politics and government -- 36 Foreign relations -- 7 History -- 5 Economic integration 4 Defenses 3 European Union 3 National security -- 3 more ... Boundaries 2 Economic conditions -- 2 Ethnicity -- 2 Politics and government 2 Relations -- 2 Social conditions -- 2 Territory, National -- 2 Armed Forces 1 Citizenship -- 1 Civil society 1 Civil war -- 1 Conflict management 1 Congresses -- 1 Decision making 1 Democracy -- 1 Diplomatic history 1 Economic conditions - 1989- 1 Ethnic relations 1 Europe -- 1 European Federation 1 European cooperation 1 Foreign relations 1 German reunification question (1949-1990) 1 less ...