How did the idea of a mahdi help Muhammad Ahmad gain followers in Sudan?

Muhammad Ahmad gained followers in Sudan by positioning himself as an eschatological figure who fulfilled the traditional expectations of a mahdi—a "divinely guided one" destined to restore the faith. His emergence coincided with the end of the 13th century of the Islamic calendar, a period traditionally associated with religious renewal and the arrival of a mujaddid (a divinely inspired reformer).12

By proclaiming himself the Mahdi, he offered a powerful symbol of hope to various groups dissatisfied with the status quo:

• Religious Reformers: Many faqihs (holy men) who opposed the legalistic and unappealing orthodoxy of the Egyptian administration viewed him as the leader who would purge the Sudan of "faithless" influences.2
• Economic Interests: Merchants affected by campaigns against the slave trade hoped to reassert their economic standing under his banner of religious war.2
• Disaffected Tribes: The Baqqarah Arabs, who resented taxes and government control, became the "shock troops" of his movement, providing the military force necessary to challenge the existing administration.2

Ultimately, his movement thrived because he framed his mission as a return to the pristine form of Islam practiced by the Prophet, effectively channeling widespread political and theological discontent into a unified revolutionary cause.2