Scarcely had the Arabi revolt been suppressed, than troubles which had arisen in another quarter called for attention. Towards the end of October, 1882, Abdel Kader Pasha, Governor-General of the Soudan, telegraphed from Khartoum that the troops which he had sent against the Mahdi had been cut off, and that a force of 10,000 men should be sent as a reinforcement, otherwise he would be unable to defend the town. He stated that, without a large force at his disposal, the insurrection would spread through all parts of the Soudan, in which case the pacification of the country would require an army of at least four times the number asked for.

The Soudan is a vast tract of Africa, stretching from Egypt on the north to the Nyanza Lakes on the south, and from the Red Sea on the east to the farthest boundary of Darfur on the west. Khartoum, at the junction of the Blue and White Niles, is about equally distant from the northern boundary of Egypt (the Mediterranean) and from the southern limit of the Khedive's Equatorial dominions, Lake Victoria Nyanza, and Uganda. From Khartoum to the ports of Souakim and Massowah, on the Red Sea, the eastern limit of the Soudan, the distance is about 480 miles, and to the westward limit, which is the most indefinite of all, but is generally fixed at the western boundary of Darfur, it is nearly 800 miles. This country is as large as India. It extends 1,600 miles in one direction and 1,300 in another. There were at this time neither railways, canals, nor, except the Nile at some periods of the year, navigable rivers, and the only roads were camel tracks.

The sovereignty of the Soudan was first seized by Egypt in the year 1819, when Mehemet Ali, hearing of the anarchy prevailing there, and wishing to introduce the benefits of a regular government and of civilization, and at the same time to occupy his troops, ordered his son Ismail, with a large army of regulars and irregulars, to invade the country. Ismail reached Khartoum, and for a time governed the Soudan, but he and all his followers were burnt alive by a native ruler, who first made them drunk at his own table and then burned the house over their heads. For this a terrible vengeance was taken, and Egyptian sovereignty was established over Sennar and Kordofan.

In 1856 the Viceroy, Said Pasha, visited the Soudan, and almost decided to abandon the country, but desisted in deference to the representation of the sheikhs and notables, who laid great stress upon the anarchy which would result from such an abandonment. He decreed reforms, most of which appear to have been punctually neglected. One Governor-General succeeded another, their chief duties being border-warfare with Abyssinia and the suppression of the rebellions which periodically broke out. In 1866 Massowah and Souakim were given to Egypt by the Sultan of Turkey. In 1870 Sir Samuel Baker set out to conquer the Equatorial Provinces, returning in 1873. Colonel Gordon, afterwards Gordon Pasha, was appointed Governor-General of the Equatorial Provinces in the following year.

When, by authority of Ismail Pasha, Gordon became absolute ruler of the Soudan, he established a system of just and equitable government, which led, after his departure, to the revolt against the misgovernment of Egyptian officials. Gordon had warned the Khedive, before his appointment, that he would render it impossible for the Turks to govern the Soudan again. He was as good as his word. By treating the people justly, by listening to their grievances, and mercilessly punishing all those who defied the law, he accustomed the Soudanese to a higher standard of government than any which had prevailed in those regions before.

After Gordon's departure a horde of Turks were once more let loose to harry the Soudanese. All his old officials were marked men, and his policy was reversed. Ilias, one of the greatest slave-owners of Obeid, was allowed to return to Khartoum; and this man, in concert with Zubehr, the king of the slave dealers (afterwards interned at Gibraltar), took advantage of the wide-spread discontent occasioned by mis-government to foment the rebellion which, under the Mahdi's leadership, assumed such serious proportions.

The chief causes of the rebellion were: the venality and oppression of the officials; the suppression of the slave-trade, and military weakness. Of the first it is unnecessary to say much. The same kind of oppression that goes on in Turkey prevailed in the Soudan, though, perhaps, not to the same extent. Here, as there, all over the country there was a class of small officials on salaries of from £2 to £4 a month, who had the responsible duty of collecting the taxes. The officials were mostly Bashi-Bazouks, irregular soldiers of Turkish descent. As there could be but little supervision over such an immense area, these men had it much their own way and squeezed the people to their hearts' content. There were instances where a Bashi-Bazouk on his salary maintained twelve horses, twenty servants, and a number of women, and this in places where the payment for water for his cattle alone would have cost more than three times his salary. It was no uncommon thing for a peasant to have to pay his taxes to the collector four or five times over without the Treasury being any the richer.

That the suppression of the slave trade, or rather the difficulties thrown in its way, was also a potent cause is evident from the list of the tribes who followed the Mahdi. Many, if not the majority, of these tribes were Baggara, or owners of cattle. These tribes were all of Arab descent, and from time immemorial had been inveterate slave-hunters. The Gallabahs were, also, to a man, against the Government, slave-trading being both their principal and by far most profitable business.

As to the military weakness, there can be no doubt that the Arabi revolt also had its effect on the Soudan population. Telegrams were actually sent them by Arabi, ordering them not to recognize the authority of the Khedive. At the same time all the available troops were withdrawn, and the revolt followed almost as a matter of course.