Economic aspects History Economic conditions 334 Agriculture 272 Social aspects 260 Political aspects 137 Social conditions 119 יותר ... Slavery 103 Politics and government 101 Commerce 90 History and criticism 70 War 65 Emigration and immigration 64 Capitalism 62 Finance 57 Art 55 Economic development 50 Technological innovations 48 Race relations 47 Economic policy 46 Authorship 44 World War, 1939-1945 44 Finance, Public 43 Globalization 43 Taxation 43 Environmental aspects 41 African Americans 40 Colonies 40 Land tenure 39 Debts, Public 37 פחות ...