History Histoire 93 Social conditions 86 Race relations 62 Gold discoveries 59 Ethnic relations 53 Description and travel 42 more ... Social life and customs 42 African Americans 40 Mexican Americans 37 Politics and government 37 Frontier and pioneer life 32 Missions 32 Indians of North America 24 Chinese Americans 23 Social aspects 23 Pioneers 22 Gold mines and mining 21 Civil rights 17 Minorities 17 Riots 17 Travel 16 Economic conditions 15 Japanese Americans 15 Emigration and immigration 14 Immigrants 14 Missions, Spanish 14 Découvertes d'or 13 Overland journeys to the Pacific 13 Sources 13 less ...