History Colonies 37 Slavery 22 Slave trade 15 Slaves 10 Emancipation 9 Civilization 8 Discovery and exploration 8 Indians of North America 8 Relations 8 Slavery in literature 8 Politics and government 6 Social conditions 6 Government relations 5 Spanish 5 Colonization 4 First contact with Europeans 4 Administration 3 African influences 3 Africans 3 Blacks 3 Commerce 3 European influences 3 French 3 Imperialism 3 Race relations 3 Territorial expansion 3 African Americans 2 African diaspora 2 Antislavery movements 2