Moskva checked the ravages of the invaders, and Tokhtamitch led his hordes back across the Oka, leaving Dimitri to repair as best he might the woes of his province, and to revenge himself on those who had betrayed or deserted him in the hour of his need. If his kingdom was in ruins, at least he was master of what remained; the Metropolitan was deposed, Oleg was forced to fly, and his fief, already ravaged by the Mongols, was harried anew by the Grand Prince’s followers. Burning with indignation against the enemy whom he had thought crushed for ever on the banks of the Don, Dimitri had yet to realise that he must return to the policy of his fathers, and wear again the yoke he had thrown so proudly off. Mikhail of Tver, who bore him an undying hatred, had shared neither in Moskva’s triumph nor in her distress, and now was plotting openly to obtain for himself the Grand Principality. With all his losses Dimitri was still the wealthiest of the Russian princes, and a timely submission enabled him to find grace in the eyes of the Khan. [Sidenote: 1384] A new impost was exacted throughout the land, and the young princes--Vasili of Moskva, Aleksandr of Tver, Vasili and Simeon of Souzdal--were held as hostages at Sarai. Russia awoke from her dream of liberty to find that her God still slept. While mourning their relapse into a state of dependence, and involved in a quarrel with the troublesome republic of the north, the Moskovites learned a disquieting piece of intelligence; Yagiello, their formidable neighbour on the west, who held more Russian lands almost than did Dimitri, had added the kingdom of Poland to his possessions. [Sidenote: 1386] The long succession of princes of the House of Piast had come to an end, in its direct line, with Kazimir the Great, who since 1370 had lain in a side chapel of the Cathedral at Krakow, where his effigy in red brown marble yet reclines under its fretted canopy. Louis, the Angevin King of Hungary, who succeeded him on the Polish throne, had died in the year 1382, leaving a daughter, Yadviga, to uphold her right as best she could in a country already marked by the intractability of the crown vassals. Yadviga only obtained the support of the Diet (composed of the nobles and higher clergy of the realm) by leaving in its hands the selection of her husband and consort. The choice of the assembly fell upon the Grand Duke of Lit’uania, whose election would at the same time remove a possible enemy from their eastern border, and furnish them with a protector against the hated Teutonic Order on their north. For this monster of their own creation (a Polish duke had been the first to give the knights a foothold in Prussia) was gradually squeezing them out from touch with the Baltic and displacing their authority in Eastern Pomerania. One of the indispensable conditions attached to the betrothal and election of Yagiello was that he should adopt Christianity of the Roman Catholic pattern; “no cross, no