Charles George Gordon in the context of "Qing Dynasty"

The Mahdist State, also known as Mahdist Sudan or the Sudanese Mahdiyya, was a state based on a religious and political movement launched in 1881 by Muhammad Ahmad (later Muhammad al-Mahdi) against the Khedivate of Egypt, which had ruled Sudan since 1821. After four years of struggle, the Mahdist rebels overthrew the Ottoman-Egyptian administration and established their own "Islamic and national" government with its capital in Omdurman. Thus, from 1885 the Mahdist government maintained sovereignty and control over the Sudanese territories until its existence was terminated by Anglo-Egyptian forces in 1898.

Muhammad Ahmad al-Mahdi enlisted the people of Sudan in what he declared a jihad against the administration that was based in Khartoum, which was dominated by Egyptians and Turks. The Khartoum government initially dismissed the Mahdi's revolution. He defeated two expeditions sent to capture him in the course of a year. The Mahdi's power increased, and his call spread throughout Sudan, with his movement becoming known as the Ansar. During the same period, the 'Urabi revolution broke out in Egypt, with the British occupying the country in 1882. Britain appointed Charles Gordon as General-Governor of Sudan. Months after his arrival in Khartoum and after several battles with the Mahdi rebels, Mahdist forces captured Khartoum, and Gordon was killed in his palace. The Mahdi did not live long after this victory, and his successor Abdallahi ibn Muhammad consolidated the new state, with administrative and judiciary systems based on their interpretation of Islamic law. The Coptic Christians, who composed a substantial portion of the country's population, were forced to convert to Islam.

Eminent Victorians is a book by Lytton Strachey (one of the older members of the Bloomsbury Group), first published in 1918, and consisting of biographies of four well known figures from the Victorian era. Its fame rests on the irreverence and wit Strachey brought to bear on three men and a woman who had until then been regarded as heroes: Cardinal Manning, Florence Nightingale, Thomas Arnold and General Charles Gordon. While Nightingale is actually praised and her reputation enhanced, the book shows its other subjects in a less-than-flattering light, for instance, the intrigues of Cardinal Manning against Cardinal Newman.

The book made Strachey's name and placed him firmly in the top rank of biographers.

Al-Zubayr Rahma Mansur Pasha (Arabic: الزبير رحمة منصور; c. 1830 – January 1913), also known as Sebehr Rahma or Rahama Zobeir, was a Sudanese slave trader and warlord in the late 19th century. He was later acknowledged by Isma'il Pasha, of the Khedivate of Egypt in granting him the title of Governor over Bahr el Ghazal (today western South Sudan).

His reputation as an archenemy of General Charles Gordon led to him gaining a near-mythic status in the United Kingdom, where he was referred to as "the richest and worst", a "Slaver King" "who [had] chained lions as part of his escort".

The siege of Khartoum (also known as the battle of Khartoum or fall of Khartoum) took place from 13 March 1884 to 26 January 1885. Sudanese Mahdist forces captured the city of Khartoum, Sudan, from its Egyptian garrison, thereby gaining control over the whole of Turco-Egyptian Sudan.

Egypt had conquered Sudan in 1820, but had itself come under British domination in 1882. In 1881, the Mahdist War began in Sudan, led by Muhammad Ahmad who claimed to be the Mahdi. The Egyptian Army was unable to suppress the revolt, being defeated in several battles and retreating to their garrisons. The British refused to send a military force to the area, instead appointing Charles George Gordon as Governor-General of Sudan, with orders to evacuate Khartoum and the other garrisons. Gordon arrived in Khartoum in February 1884, where he found it impossible to reach the other garrisons which were already besieged. Rather than evacuating immediately, Gordon began to fortify the city, which was cut off when the local tribes switched their support to the Mahdi. Approximately 7,000 Egyptian troops and 27,000 (mostly Sudanese) civilians were besieged in Khartoum by 30,000 Mahdist troops, rising to 50,000 by the end of the siege.

Equatoria is the southernmost region of South Sudan, along the upper reaches of the White Nile and the border between South Sudan, Uganda, Kenya, and the Democratic Republic of the Congo. Juba, the national capital and the largest city in South Sudan, is located in Equatoria. Originally a province of Anglo-Egyptian Sudan, it also contained most of northern parts of present-day Uganda, including Lake Albert and West Nile. It was an idealistic effort to create a model state in the interior of Africa that never consisted of more than a handful of adventurers and soldiers in isolated outposts.

Equatoria was established by Samuel Baker in 1870. Charles George Gordon took over as governor in 1874, followed by Emin Pasha in 1878. The Mahdist Revolt put an end to Equatoria as an Egyptian outpost in 1889. Later British Governors included Martin Willoughby Parr. Important towns in Equatoria included Lado, Gondokoro, Dufile and Wadelai. The last two former areas of Equatoria, Lake Albert and West Nile are now situated in Uganda.

The Battle of Omdurman, also known as the Battle of Karary, was fought during the Anglo-Egyptian conquest of Sudan between a British–Egyptian expeditionary force commanded by British Commander-in-Chief (sirdar) major general Horatio Herbert Kitchener and a Sudanese army of the Mahdist State, led by Abdallahi ibn Muhammad (the Khalifa), the successor to the self-proclaimed Mahdi, Muhammad Ahmad. The battle took place on 2 September 1898, at Kerreri, 11 kilometres (6.8 mi) north of Omdurman.

Following the establishment of the Mahdist State in Sudan, and the subsequent threat to the regional status quo and to British-occupied Egypt, the British government decided to send an expeditionary force with the task of overthrowing the Khalifa. The commander of the force, Sir Herbert Kitchener, was also seeking revenge for the death of General Gordon, who had been killed when a Mahdist army captured Khartoum thirteen years earlier. On the morning of 2 September, some 35,000–50,000 Sudanese tribesmen under Abdullah attacked the British lines in a disastrous series of charges; later that morning the 21st Lancers charged and defeated another force that appeared on the British right flank. Among those present was 23-year-old soldier and reporter Winston Churchill as well as a young Captain Douglas Haig.