History 242 Historia 114 Politics and government 79 Foreign relations 66 Race relations 47 African Americans 46 Social conditions 44 más ... Discovery and exploration 35 Indians 27 Indians of North America 27 Social aspects 26 Civilization 25 Relations 25 Emigration and immigration 24 Presidents 23 Spanish 22 Indios 19 Political aspects 19 Descubrimiento y exploración 18 Mexicans 18 Relaciones 18 Race identity 17 Relaciones exteriores 17 Antiquities 16 Civil rights 16 Política y gobierno 16 Ethnic identity 15 Racism 15 Philosophy 14 World politics 14 menos ...