Columbia subject headings:
Colonies--History.
Colonization--History.
Decolonization--History.
Imperialism--History.
Harvard subject headings:
Colonies--History
Colonization--History.
Decolonization--History.
Imperialism--History
Princeton subject headings:
Colonies--History.
Colonization--History.
Decolonization--History.
Imperialism--History.