History Economic conditions 45 Social conditions 28 Politics and government 21 Economic conditions -- 17 History -- 11 Politics and government -- 8 more ... Foreign relations -- 4 Officials and employees -- 4 Economic condition 3 Examinations 3 Foreign relations 3 Capitalism -- 2 Civilization 2 Colonies -- 2 Communism -- 2 Comparative economics 2 Culture -- 2 Description and travel 2 Economic policy -- 2 Economics conditions 2 Industries -- 2 Industry and state -- 2 Presidents -- 2 Public administration 2 Rural development -- 2 Social conditions -- 2 Transportation -- 2 Administration -- 1 Appropriatious and expenditures 1 less ...