Columbia subject headings:
America--Colonization.
Asia--Colonization.
Civilization, Modern.
East and West.
History, Modern.
Harvard subject headings:
Civilization--History--16th century.
Discoveries in geography
History, Modern--16th century
Princeton subject headings:
Civilization--History--16th century.
Discoveries in geography--History--16th century.
History, Modern--16th century.