History 704 Politics and government 395 Indians of North America 219 Slavery 179 Enslavement 170 Law and legislation 156 Railroads 132 Land tenure 126 Claims 117 Presidents 97 Law 94 Military bases 90 Bridges 89 Extension to the territories 89 Public buildings 87 Public lands 80 Indigenous peoples 75 HISTORY 73 Expenditures, Public 68 African Americans 67 World War, 1939-1945 65 Budget 64 General 61 Kansa Indians 61 Campaigns 59 Education 53 Political aspects 51 Catholic Church 49 Military campaigns 49 Social conditions 48