History 40 Politics and government 31 Slavery 27 Extension to the territories 19 Japanese 17 Emigration and immigration 16 Description and travel 15 more ... Compromise of 1850 13 Social conditions 13 Chinese 12 Chinese Americans 10 Travel 9 Gold discoveries 8 Legal status, laws, etc 8 Periodicals 7 Race relations 7 Gold mines and mining 6 Japanese Americans 6 Social life and customs 6 Armenian Americans 5 Armenians 5 Ethnic groups 5 Germans 5 Personal narratives 5 Societies, etc 5 Asian Americans 4 Biography 4 Cultural assimilation 4 Economic conditions 4 Emigration and immigration law 4 Ethnic identity 4 Foreign relations 4 Histoire 4 Indians of North America 4 Italian Americans 4 Land tenure 4 Law and legislation 4 Russians 4 Speeches in Congress 4 Acculturation 3 less ...