Politics and government -- 30 Foreign relations -- 19 History -- 10 Biography -- 7 Politics and government 7 Foreign relations 6 Perestroika 6 more ... Heads of state -- 5 History 5 Nationalism -- 4 Social conditions -- 4 Communism -- 3 Ethnic relations 3 Congresses -- 2 Economic conditions -- 2 Foreign relations administration 2 Glasnost 2 Presidents -- 2 World politics -- 2 Armed forces -- 1 Armenians -- 1 Autonomy and independence movements 1 Baltic States -- 1 Biography. -- 1 Causes 1 Civilization 1 Civilization, Modern -- 1 Communists -- 1 Congress. -- 1 Crimean War, 1853-1856 -- 1 less ...