Columbia subject headings:
Harvard subject headings:
Angola--Foreign relations--Portugal.
Angola--History--1648-1885
Angola--History--1885-1961
Angola--Politics and government--1855-1961
Dom Nicolau, Prince of Congo, 1830-1860.
Portugal--Foreign relations--Angola.
Princeton subject headings:
Angola--History--1648-1885.
Dom Nicolau, Prince of Congo, approximately 1830-1860.
Princes--Angola--Biography.
Slavery--Angola--History--19th century.