Discovery and exploration 2 History 2 Blacks 1 Cultural pluralism 1 Ethnic relations 1 Excavations (Archaeology) 1 First contact with Europeans 1 Human settlements 1 Indians of North America 1 Paleo-Indians 1 Paleolithic period 1 Pre-Columbian 1 Prehistoric peoples 1 Race relations 1 Regionalism 1 Relations with Indians 1 Whites 1