And the merchants who made their living in Constantinople had, like those of the Hansa in London, their own permanent settlements. You may see to-day the great khans or caravanserais where the merchants and pilgrims congregate, the walls strong to resist attacks, the gates closed at nightfall, the arrangements for common meals and common ablutions; and as you pass by you see the dark figures clustering in the doorways, or sitting on the marble steps, in their picturesque colours, and with that strange far-away look on their faces that you learn to know so well in the land where there is never any more pressing need than repose, or any delight more sweet. The custom of these great common lodgings, and very often the buildings themselves, go back far into the Middle Ages. In the thirteenth century they held great colonies of merchants strong for mutual combination and defence. Many of them were near to the wharves, as close within the walls as might be, and some without. No visitor to-day can fail to be struck by the great khan hard by the Mosque of Validè Sultan, which he passes when he has crossed the Galata Bridge on his way to S. Sophia.
The traders of the thirteenth century were by no means all Christians. Jews and even Mohammedans were allowed to settle in the imperial city, and Geoffrey of Vinsauf bitterly says "it would have been right even to have rased the city to the ground, for, if we believe report, it was polluted by new mosques, which its perfidious Emperor allowed to be built that he might strengthen the league with the Turks." It seemed strange to the Western that such toleration should be allowed. The Jews and the Albigenses were the only "dissenters" he had met; but in the East there were not only the Romanists, but the Monophysite Armenians and the Nestorian Chaldeans; Jews and Mohammedans made no such very great addition to the parliament of religions. And they all, infidels and heretics alike, brought their riches to the great mart. As the Turks advanced over Asia, scattering ruin and blight before their path, the riches of the devastated cities fled to shelter behind the Byzantine walls. No city it seemed to a Jewish observer of the time was so rich or so full of business save Baghdad. Gold was nothing accounted of; it covered the walls and pillars of the palace, it made the throne of the Emperor, the lamps of S. Sophia, the vessels of many an almost forgotten church. "The whole Empire had been put under contribution for the adornment of the capital. The temples and public buildings of Greece, of Asia Minor, and of the islands of the Archipelago, had been ransacked to embellish what its inhabitants spoke of as the Queen City, and even Egypt had contributed an obelisk and many other monuments." All who saw the city were amazed at its riches, at the magnificence of its buildings, of its churches, palaces, houses of nobles and merchants. Marble and stone houses filled the chief streets; the splendid marble from the quarries of the Proconnesus, the stone which still stands firm in the massive dwellings of the Phanar. There were of course then as now many houses of wood, and fires were constant, but those who noted the fine houses destroyed as more than in the three largest cities of France, noted also that of those that remained as of the treasures of the churches there was "neither end nor measure." And with all this there was a profound sense of security, so often and so unwarrantably contemporaneous with a marked development of luxurious life. Constantinople had never been captured, men easily believed that it never would be. Its walls, so magnificent in their decay, had proved and were thought still to be impregnable. The subtle influence of Oriental habits had eaten, it seemed, into the life that had been so strong and fierce under Justinian or Heraclius. Men, as they had ceased to contend earnestly for faith or morals, had sunk down into a luxurious pleasure-loving life, almost like that of old Rome or modern London. Some of the worst features of Asiatic life had already been introduced; the entourage of the Sultan that is now so conspicuous at the Selamlik had its counterpart in the court of the Comneni. The Emperor's favourites were coming to be the administrators of the Empire: so bitterly complains the chronicler Nicetas—"these creatures who guard the mountains and the forests for the Emperors' hunting with as great care as the old pagans guarded the groves sacred to the gods, or with a fidelity like that with which the destroying angel guards the gates of Paradise, threatened to kill any one who attempted to cut timber for the fleet": it was at the crisis of the Empire. And while the Empire was ruled by eunuchs and the court by mistresses the Emperors of the twelfth century lived in luxury, effeminacy, and indolence. It had come to be thought—what a contrast from the days of the sleepless Justinian!—that work was impossible for a Cæsar of the East. And the example spread, as such examples always do, downwards. It was easy for there to be a general who could not lead, soldiers who could not fight, sailors who could not navigate beyond the Bosphorus. And there was no hope of regeneration from a strong Church preaching righteousness. The Emperors in the time of their power had reduced the patriarchs to impotence: and now there was no one in the Church to resist, as there was no one in the State to lead. Yet still the immemorial protest of the Church was not altogether silenced. Historians show that there were many priests and monks who preached and lived according to a high standard of morality and religion. Learning still survived, and piety, without ostentation but never wholly without influence.
It is not necessary to detail the causes which led to the diversion of the fourth Crusade upon Constantinople. Venice, it is enough to say, betrayed the Christian cause by a secret treaty with the infidel, and then formed a plot for the capture of the city. Alexius III. had deposed Isaac Angelus in 1195; his son Alexius was allowed to escape and secretly took ship for Italy and eventually threw himself upon the charity of his brother-in-law, Philip of Swabia, the claimant of the imperial crown of the West. He was assisted; and by a series of complicated intrigues the Crusaders were induced to undertake the capture of Constantinople and the restoration of the Empire to the supposed rightful heir, as a step towards the accomplishment of the duty to which they were pledged, the recovery of the Holy Land. The Pope's wishes were set aside, the honest leaders were hoodwinked, and Dandolo won the day.
On the 23rd of June 1204 the crusading fleet anchored at San Stefano. Thence they saw the magnificent city that lay before them. "Be sure," says Villehardouin, "there was not a man who did not tremble, because never was so great an enterprise undertaken by so small a number of men." Next day they sailed up to the Bosphorus, past the walls, crowded with spectators, to the anchorage of Chalcedon. The Emperor sent to know their intentions: they ordered him to surrender the crown to the young Alexius. Then came another of those picturesque scenes of which the mediæval history of the New Rome is so full. It was determined to show the young prince to the people whom he came to recover to their allegiance. The splendid Venetian galleys sailed up to the walls of the Sea of Marmora, and stopped where the crowds that thronged them could see. Then loud voices proclaimed the presence of the young Alexius, and demanded the loyal assent of the people to the restoration of his father. Only mocking laughter came back from the walls.
Then the Crusaders prepared for the attack. First it was necessary to break the chain which crossed the Golden Horn from Galata, near what is now Tophané, to near the point of the peninsula of Byzantium. A fierce attack was made on the watch-tower at Galata, from which the chain began. It was captured, the chain was loosed, and the fleet sailed up the Golden Horn. The army was then landed beyond the walls, where is now Eyoub, and took up a position opposite the Blachernae quarter, which had so long been felt to be the weakest point. They were opposed then by the wall of Manuel Comnenus which extended southward of the wall of Heraclius, and considerably in advance of the old Theodosian fortification. Moats, walls, towers, stood before them, a defence hitherto unbroken, and which even before the last fortification was erected it had been found impossible to overthrow.
And so it proved again. When the attack on July 17, 1203, was directed against the northern point of the wall of the Blachernae quarter, near the Xylo-porta, it was utterly defeated. And so again when Dandolo, the old blind Doge, dauntless in bravery as adept in cunning, led the attack from his galleys, their success was but temporary. The old sea-dog had his galley drawn up close to the walls, threw himself on shore, on the narrow strip of land that stood between the water and the walls, and planted the gonfalon of S. Mark on one of the towers. The ends of the flying bridges were thrust from the vessels on to the towers and thus twenty-five were captured. But the Venetians could not maintain their position, and when the Greeks were reported to have made a sortie from the gate of S. Romanus, south of the Blachernae quarter, they withdrew to help these other Crusaders who were attacked.
Meanwhile within the walls disaffection with the government of Alexius III. was growing into readiness to accept the new sovereign to be set up by the Crusaders rather than to risk the chances of capture. Alexius himself would do nothing to protect the city: and when he brought out his troops to the sortie, he retired with them before any fighting took place. Before the next day he himself fled across the sea, deserting his wife and children and the city. The imprisoned Isaac was at once released and placed upon the throne.
This was far from satisfying the greed of the Crusaders. It took away from them every honest cause for attack. So they demanded through Villehardouin, who has himself written us the account of it, that Isaac should consent to the hard terms which Alexius his son had agreed to—that the Empire should be placed under the Roman Pope; that 200,000 marks of silver should be given to the army, and that they should be supported for a year; that 10,000 of them should be taken to Egypt in Greek vessels at the Emperor's expense, and supported there for a year; and that Isaac should agree, during the whole of his life, to keep five hundred knights for the defence of the Holy Land. The Emperor, though from the first he said that he thought it would be impossible to carry it out, felt bound to give his consent to the convention. Alexius was crowned in S. Sophia as joint occupant of his father's throne, and it seemed as if the danger was at an end.
But it was only just begun. Some of the Crusaders wanted to push on at once to the Holy Land or to Egypt; but they had not enough money, and no ships. And the Venetians who held the ships delayed: they cared for nothing but that the army should be divided. Within the city the fiercest opposition was aroused when it was known that Alexius had promised to subordinate the Church to Rome. He was making large exactions too, to pay the men who had brought him back to his country. Feeling against him rose rapidly in the capital. He left with Boniface of Montferrat to pursue the fugitive Emperor to Adrianople.
During his absence the populace, eager to vent their rage upon the foreigners, attacked the Pisan quarter: a sort of retaliatory measure was the attack of the Crusaders on a Saracen mosque between S. Irene and the sea. The Saracens had legal rights of toleration, and the Christians of Constantinople defended them. The riot ended, as riots so often do in the East, in a fire—and before it was over a great strip of the most thickly populated part of the city, running right across from the Golden Horn to the Mamora, was utterly destroyed. Confusion soon reigned within the city. The old Emperor, so long imprisoned, was weak and foolish; but young Alexius was equally weak and enjoyed his new sovereignty without the slightest dignity. He drank and gambled in the Crusaders' tents, took off his imperial circlet, and wore the woollen caps of his boon companions. And he could not find money to pay the incessant demands of the greedy host. As new taxes were levied the citizens resisted, and eventually the Western troops became really in need. They had not enough provisions: why were they waiting: why were the ships not ready to carry them on their quest?