Economic conditions -- 5 Foreign relations -- 4 Politics and government -- 4 Relations -- 4 Politics and government 3 Commerce -- 2 Congresses -- 2 more ... Economic conditions 2 Emigration and immigration 2 Foreign economic relations -- 2 Government policy -- 2 History 2 History -- 2 Military relations -- 2 Social conditions 2 Addresses, essays, lectures -- 1 Authority 1 Brain drain -- 1 Business, commerce 1 Case studies -- 1 Chinese -- 1 Civilization 1 Colonies -- 1 Communication and culture -- 1 Congresses 1 Conservationists -- 1 Debts, External -- 1 Defence -- 1 Defenses 1 Defenses -- 1 less ...