Columbia subject headings:
Mahdī, Muḥammad Aḥmad, ǂd 1848-1885.
Sudan--Foreign relations--History.
Sudan--History--1881-1899.
Harvard subject headings:
Princeton subject headings:
Islam--Sudan--19th century.
Mahdiyah--Sudan--19th century.
Sudan--History--1881-1899.
Sudan--History--19th century.
Sufism--Sudan--19th century.