Columbia subject headings:
Harvard subject headings:
Secession--History.
Secession.
Separatist movements--History.
Separatist movements.
World politics--20th century
World politics--21st century
Princeton subject headings:
Secession--History.
Secession.
Separatist movements--History.
Separatist movements.
World politics--20th century.
World politics--21st century.