Answer
The Mahdist War, led by Muhammad Ahmad, originated in the Sennar region of Sudan. This uprising sought to challenge the ruling Turko-Egyptian regime and establish an Islamic state. Ahmad proclaimed himself the Mahdi, a messianic figure, and gathered a substantial following among the Sudanese population. The Mahdist forces successfully captured vast territories, including the city of Khartoum, and established a theocratic government in Sudan.