While affairs in Medina were still undecided, the Caliph learned that Ibráhím had risen in the interests of his brother Mohammed at Basra (Monday, 22nd November 762). Mansúr had previously come to know that Ibráhím was in hiding there, and had taken some precautionary measures accordingly; but he nevertheless seems to have been greatly taken aback by this new insurrection. Basra was not merely a wealthy trading city, but also, from a military point of view, very different in importance from Medina. To a man of enterprise it offered great opportunities; from it as a basis, the Tigris and Euphrates could be blockaded, and the maritime provinces to the east comparatively easily mastered. Nor was this all; the very important city, in the immediate neighbourhood of which Mansúr had his residence, the turbulent Cufa, was thoroughly Alid in its sympathies. Should an Alid make his appearance in the neighbourhood with an army, an outbreak might be expected within it at any moment. In addition to this, the whole central province was in a state of ferment. But Mansúr had at the moment only a very few troops at hand. He afterwards confessed that it had been a great mistake to leave himself so bare, and declared that in future he would always retain at least 30,000 men beside him. He managed, however, to arrange them so that the Cufans considerably overestimated the number of his forces. The Cufans were, moreover, always much more heroic in words than in deeds. Mansúr, however, was not yet able to take the offensive against Ibráhím; but was constrained to suffer the latter, into whose hands the treasure of the rich province of Basra had fallen, to become master of Susiana and Persis also. Wásit also received the troops of Ibráhím. In the neighbourhood of this city, indeed, he was encountered by an officer of Mansúr’s; and here the two armies stood, facing one another, until the whole struggle was ended.
Ibráhím deemed himself already a sovereign, and spent his time with a wife whom he had just married. Mansúr, on the other hand, never looked on the face of woman till the conflict was over. A contemporary praises, in eloquent words, the courage and determination which he maintained in his critical position. The advice to incite Cufa to revolt was set aside by Ibráhím because such a step would cause much harm to children, women, and other non-combatants. In the same spirit he forbade pursuit of fugitives, and so forth. All this sounds very well, but is out of place in one who, for his own interests, is carrying on a rebellion which, under any circumstances, must involve much bloodshed, and can ultimately achieve success only by concentration of every energy. In such tenderness there is more of weakness than of humanity. “Thou desirest the sovereignty, yet darest not to slay!” some one said to him. Pour faire des omelettes il faut casser les œufs.
Soon after the middle of December 762, Ibráhím received the crushing intelligence of his brother’s death. Yet if even now he had advanced immediately, he would still have been able to put Mansúr to great straits. But when he finally marched towards Cufa with barely 10,000 men, a sixth or a tenth of his strength on paper, Isá had already arrived at the head of a superior army. The Caliph had ordered troops from Media against Susiana, which soon captured the capital Ahwáz. In Bákhamrá, only sixteen hours south of Cufa, the army of Ibráhím, who had now assumed the title of Caliph, encountered the advancing host of Isá (Monday, 14th February 763). Mansúr’s vanguard was driven back; but Isá held his ground, and the fugitives soon rallied. Mansúr’s cousins, the sons of Sulaimán, fell upon Ibráhím’s rear. After a fierce battle he fell, mortally wounded with an arrow. The Caliph caused his head also to be publicly exhibited, but would not suffer a bystander to treat the dead with contumely. He punished with frightful cruelty a coarse person who had spat on Ibráhím’s head in his presence.
A victory for Ibráhím seems to have been widely counted upon. The famous blind poet, Basshár, no sectary, but an enlightened freethinker, had sent him a poem, in which he was praised, and Mansúr violently attacked; after the battle he so altered the poem, that he was able to give it out as an earlier production directed against Abú Moslim.
Ibráhím’s death was a much greater relief to Mansúr than that of Mohammed. He could now feel pretty sure that henceforth no Alid claimant could be of danger to him. True, he caused the whole family of those kinsmen of his to be strictly watched, but he was particularly willing to receive into his service any members of it whom he thought he could venture to trust. Perhaps in this the old Arab feeling for family ties had still some part; however that may be, it produced a good effect, as showing to subjects that both the main branches of the Háshimids still held by one another.
In Medina these struggles were followed by a little after-piece. Persian soldiers behaved with violence towards peaceful inhabitants. The people complained to the chief authority, but received no attention. Then active resistance began. The town butchers (black freedmen, it would seem) killed a soldier; from this it grew to a general melée. The negroes, who were numerous, both slaves and freedmen, drew together, and killed part of the little garrison. The governor fled. They even seized on the stores that had been set apart for the troops. The higher classes trembled before the wrath of Mansúr. It is noteworthy that two who specially exerted themselves for the restoration of order were a member of the Omayyad family and an official who had been imprisoned for his participation in the rising of Mohammed. The loyalty of the population towards the sovereign was strongly insisted on. The stores that had been plundered were given back or made good. The blacks suffered themselves to be persuaded by the representations of the most prominent citizens, and returned home. It was now seen to have been only a momentary outburst of temper, not social revolution. The governor returned at the earnest invitation of the notables. Four ringleaders had a hand chopped off—the punishment of thieves. The chief mischiefmaker perished in prison.
The rebellion of the Alids had interrupted Mansúr in a great undertaking—the building of Bagdad. With the fall of the Omayyads it had become quite a matter of course that the rulers of the enormous empire, which extended from what is now Russian Turkestan and the Indus to Aden, Algeria, and Eastern Asia Minor,[[34]] should have their seat in Babylonia; but they had not as yet any definite capital. Mansúr lived a great deal in Háshimíya, founded by his predecessor, in the immediate neighbourhood of Cufa. But the Cufans, little attached as they were to the Abbásids, were no desirable neighbours. After the death of Ibráhím, Mansúr had preached them as sharp a sermon against their sins as any Omayyad governor could have delivered, and expressed in it his astonishment that the Omayyads had not long ago depopulated the accursed place as an abode of unbelievers. Moreover, nothing but a creation of his own could have satisfied Mansúr’s haughty nature. After long deliberation he determined to build the new capital on a site on the west bank of the Tigris, then occupied by a little place named Baghdád.[[35]] So far as we can judge, the district had already before this time been brought into communication with the Euphrates by means of canals. Mansúr caused the connection to be notably extended and improved. The official name of the city here planted was Madínat-as-Salám (“the city of welfare”), but in practical use the old name Bagdad maintained exclusive currency. Mansúr’s keen vision in the selection of this site may well be compared with that shown by Alexander when he founded the Egyptian Alexandria. At any rate, the situation of this city, which he called into being out of nothing, is so favourable that it soon became a world-city, with all the lights and shadows of such; a place which, Constantinople apart, had no rival, and which, even in the deep decline of all these countries since that time, and notwithstanding the irreparable injury suffered by Bagdad itself when it was destroyed by the Mongols in 1258, still remains a considerable city, by far the most important in the whole region of the Euphrates and Tigris. The work of building had been begun in early summer of 762. When news came of Mohammed’s revolt, the walls were hardly six feet high. When Ibráhím approached, the rumour spread that he had gained a great victory. Hereupon the freedman who had been left in charge of the vast accumulations of building materials set fire to the stores of timber, that they might not fall into the hand of the enemy. As soon as the empire was once more pacified, Mansúr caused operations to be resumed. The building was carried out on a magnificent scale. Vast sums were expended by the Caliph in building residences for himself, his dependants, kinsfolk, and freedmen, as well as his officers and troops, and also in constructing mosques, government offices, aqueducts, canal bridges, and fortifications. He assigned allotments to the members of the reigning house and the grandees on which to build their houses. Troops of handicraftsmen, traders, and other settlers flocked to the spot. Houses of sun-dried brick cost but little, and it is possible that even directly, certainly indirectly, the trifling outlay of the builders was in many cases made good out of the public exchequer. Traders had, moreover, to pay a duty upon their shops. In 766 the great city was practically finished; its walls were completed in 768. Mansúr’s city, as already mentioned, lay on the west bank of the river. Yet even he caused the opposite side, where now the main part of Bagdad lies, to be built on. “The camp” of his son Mahdí was there. It seemed expedient to place a portion of the garrison on the other side of the river, so that, in case of necessity, the two divisions of the army might be able to hold one another in check. A peculiar police regulation was introduced later by Mansúr; he caused the markets, which were frequented by an excessive number of strangers, whose supervision was not easy, to be removed outside the city proper. Bagdad was strongly fortified. Mansúr caused other important inland cities also to be fortified in such a way that the garrisons might be able to cope with casual insurrections. This he did also in the case of the city of Ráfika, founded by him in 772 in the neighbourhood of Rakka (Callinicus), on the east bank of the middle Euphrates, in which he placed a garrison of Khorásánians.
The active superintendence which Mansúr gave to the building of his capital is only an instance of the whole system of his government, which was, as far as possible, personal. Posts were still conferred on a certain number of Arab nobles, who still sometimes showed the insubordination and tribal patriotism of their race, but he took care that they never overgrew himself. At the same time, he conferred the most important governorships upon various members of his own family, and made ample provision for all of them; but he kept them in strict subjection, and on occasion chastised them severely. He had absolutely trustworthy tools in his freedmen and clients of foreign extraction, to whom, to the horror of the aristocratic Arabs, he sometimes gave even the most important administrative offices. The governors and other high officials of the provinces were strictly overseen by special officers, entirely independent of them, who sent an uninterrupted series of couriers with their reports to the Caliph.[[36]] When, for example, Mansúr on one occasion learned through this channel that the governor of Hadramaut (in the extreme south of Arabia) was more attentive to the pleasures of the chase than to the duties of his office, he deposed him at once. Even the actions of Mahdí, the heir-apparent, in his capacity as governor of the lands of the east were subjected to this kind of control. Thus, the Caliph having on one occasion learned that Mahdí had given to a certain poet much too great a reward for a laudatory copy of verses, he compelled the recipient to repay the greater part of the sum.[[37]] These officers, in addition to their special duties, reported all the more important law cases, and all occurrences of any particular interest; they further apprised the Caliph of the price of provisions; for, with a view to public peace and security, it was judged necessary to take prompt measures for the prevention of dearths.[[38]] So well was Mansúr informed as to the state of the provinces, that it was whispered he had a magic mirror in which he could see all his enemies. Still better is he characterised by his own words to his son: “Sleep not, for thy father has not slept since he came to the caliphate; when sleep fell upon his eyes, his spirit remained awake.” He was an excellent financier. He is frequently reproached with avarice even; he was surnamed “the father of farthings,”—a reproach which presumably came chiefly from those whose interests would have been served by that prodigality to favourites which has procured a very undeserved reputation for many Oriental sovereigns. In the same way other eminently good rulers, such as the Omayyads Abdalmelik and Hishám, have the reputation of avarice. Mansúr was certainly strict in money matters. The vast expenditures on the building of Bagdad he caused to be accounted for down to the last farthing, and he compelled his officials to refund little profits which they had made for themselves. He looked sharply after his tax collectors. In payment of the land tax he commanded that only certain kinds of the gold coins of the Omayyads which were quite of full weight should be received. Of course he followed also the old established principle of Oriental princes, according to which high officers who had gorged themselves were compelled to give back their accumulations.[[39]] Even one of such exalted position, and of such conspicuous service in the establishment and support of the Abbásid dynasty, as was the Persian[[40]] Khálid, son of Barmek, the founder of the Barmecide power, was subjected to an operation of this kind. He was called upon within a very short time to pay 3,000,000 dirhems (about £57,000); the Caliph in the end was satisfied with 2,700,000. Nay, even Mansúr’s own brother Abbás was compelled to give up the money which he had squeezed from the people when governor of Mesopotamia, and was imprisoned besides. An Oriental State can never altogether prevent the abuse by which officials, small and great, enrich themselves in illicit ways. On the occasion of a land survey at Basra it was discovered that a family of consideration, the descendants of the Prophet’s freedman Abú Bekra, had increased their estate to a prodigious extent; the Caliph cut it down to a tenth. Here is a piece of the higher finance:[[41]] Mansúr ordered every inhabitant of Cufa to pay five dirhems (nearly two shillings); all, of course, complied. Having in this way ascertained their exact number, he imposed on all a poll-tax[[42]] of forty dirhems (fifteen shillings), and applied the money to the fortifications of the city. Whether this story is exact we will not undertake to say; in any case, it is probable that he sought by stringent measures to raise the revenue as much as possible, especially as he left to his successor an overflowing exchequer. It must, however, be considered that the comparative measure of quiet which he secured for most of the countries of his empire more than compensated for high taxation. How far the Christians’ complaints of special fiscal oppression under Mansúr were justified, is a point we can hardly clear up now; perhaps they arose chiefly from the circumstance that he taxed churches and monasteries, which was not so very unreasonable. If he again reduced the tribute of the Cyprians to the sum originally fixed by treaty, this was probably due, not so much to a sense of justice as to policy; it was expedient that so exposed a possession should be considerately treated.
We are safe in saying that the rule of Mansúr, however hard, treacherous, or ruthless it may often have been, was on the whole a blessing to the empire. He could say of himself with truth, that he had done for the mass of the people the one thing which the masses needed; he had insisted on righteousness (in the administrative and judicial acts of his officials), had protected them against external attack, and had secured internal peace and quiet. The fruits of his exertions were reaped by his successors, who were by no means on a level with himself. The great prosperity of the empire under his grandson Hárún ar Rashíd is mainly due to Mansúr. It must be borne in mind, of course, that when we speak of an Oriental State, justice and internal peace must always be taken with large qualifications. Even the best of Oriental governments is extremely defective from our point of view.[[43]]
The personal requirements of Mansúr were few. Born and bred in the deserts of Edom, he had no turn for such luxury as prevailed in the court of his son, and which afterwards often passed into extravagant profligacy. Like his predecessor, he seems to have been no slave of women. He drank no wine, and did not tolerate at his court music and song, which at that time were only too often the handmaids of debauchery. On the other hand, he was a friend of literature; he particularly admired the fine heroic histories of old Arabia. Himself a man of high mental endowments, he liked to associate with people of culture and intellect. He found pleasure also in the verses and drollery of the talented bibulous and frivolous negro Abú Duláma, who seems to have been more of a court fool than of a court poet. By natural gift and by cultivation, he became one of the most famous of Arabic orators. He it was, moreover, who first caused Greek scientific works to be translated into Arabic. He had at least a share in the rise of Arabic science which took place in his time.