Concept:The Mahdiyya Movement was a Sudanese uprising against foreign domination in the late 19th century.Explanation:The movement aimed to remove the Ottoman-Egyptian rule that had controlled Sudan since 1820–1822.Its leader, Muhammad Ahmad, declared himself the Mahdi and started the revolt in the early 1880s.The revolt succeeded in overthrowing the Ottoman-Egyptian administration during that period.Answer:Ottoman-Egyptian Regime in the early 1880s.