Economic conditions -- Politics and government -- 54 Social conditions -- 21 History -- 9 Foreign relations -- 8 Economic forecasting -- 6 Periodicals 6 more ... Periodicals -- 6 Congresses -- 4 Forecasting -- 4 Congresses 3 Economic conditions 3 History 3 Social conditions 3 Foreign relations 2 National security -- 2 Politics and government 2 Socialism -- 2 20th century 1 Agriculture 1 Agriculture -- 1 Biography -- 1 Blacks -- 1 Budget -- 1 Budget deficits -- 1 China -- 1 Civilization 1 Civilization -- 1 Colonies -- 1 Debts, External -- 1 less ...