Abdallahi ibn Muhammad vs King Sukjong of Joseon

Following Muhammad Ahmad's death, Abdallahi ibn Muhammad succeeded him as Khalifa (successor) of the Mahdist state. He consolidated power by eliminating rivals and establishing a military dictatorship based on his Ta'aisha tribe.

Anglo-Egyptian forces under General Herbert Kitchener defeated the Mahdist army at Omdurman on September 2, 1898. The battle resulted in over 10,000 Mahdist casualties and effectively ended the Mahdist state's control over Sudan.

Abdallahi ibn Muhammad was killed in action at the Battle of Umm Diwaykarat on November 25, 1899. His death marked the final defeat of the Mahdist movement and the establishment of Anglo-Egyptian condominium rule over Sudan.

King Sukjong deposed Queen Inhyeon in favor of his concubine, Jang Hui-bin, after a power struggle. This act triggered a major factional conflict between the Southerners (supporting Jang) and the Westerners (supporting Inhyeon), reshaping court politics.

Sukjong restored Queen Inhyeon to her position after Jang Hui-bin's faction lost favor. This reversal led to the purge of the Southerners and the return of the Westerners to power, demonstrating Sukjong's use of queen changes to control factions.

Sukjong's reign saw the rise of the Silhak movement, which emphasized practical reforms in agriculture, commerce, and technology. Scholars like Yi Ik gained influence, leading to policy discussions that later influenced Joseon modernization efforts.

Sukjong deposed and executed his concubine Jang Hui-bin after she was implicated in a plot to curse Queen Inhyeon. This event solidified the power of the Westerners and marked the end of Jang's influence, but also deepened factional hatred.