History -- 6 Politics and government -- 4 Unification, 1990 3 Biography -- 2 Foreign relations -- 2 American -- 1 Chronology -- 1 more ... Communism -- 1 Economic conditions -- 1 Foreign public opinion -- 1 Heads of state -- 1 Intellectual life -- 1 Juvenile literature 1 Juvenile literature -- 1 National socialism -- 1 Political culture -- 1 Public opinion -- 1 Relations -- 1 Social conditions -- 1 Unification -- 1 less ...