Columbia subject headings:
British--Sudan--History.
Great Britain--Relations--Sudan.
Sudan--History--1899-1956.
Sudan--Relations--Great Britain.
Harvard subject headings:
Great Britain--Foreign relations--Sudan.
Sudan--Foreign relations--Great Britain.
Sudan--History--1899-1956
Sudan--Politics and government
Princeton subject headings:
Great Britain--Foreign relations--Sudan.
Sudan--Foreign relations--Great Britain.
Sudan--History--1899-1956.
Sudan--Politics and government.