Economics 35 History 21 African Americans 13 Economic conditions 13 Politics and government 13 Tariff 9 Protectionism 8 more ... Race relations 6 Économie politique 5 Social conditions 5 Books and Bookselling--19th Century 4 Publishers and Publishing--Pennsylvania--Philadelphia--19th century 4 economics 4 Colonies 3 Economic aspects 3 Economics--19th century 3 Ethnic identity 3 Free trade and protection 3 Industrial promotion 3 Political science 3 Race identity 3 Taxation 3 Antirent War, N.Y., 1839-1846 2 Aufsatzsammlung 2 Booksellers and bookselling -- Pennsylvania -- Philadelphia 2 Capitalism 2 Commerce 2 Creoles 2 Depressions 2 Economic policy 2 Ethnicity 2 Ethnische Identität 2 Free trade 2 Histoire 2 Household employees 2 Law and legislation 2 Medical Publications--19th century 2 Medical Publications--20th century 2 Miscegenation 2 Political activity 2 less ...