The beginning of the fourteenth century was the commencement of a new epoch in the life of Russia; in its two halves two empires began to crystallize: that of Moscow in the east and that of Lithuania in the west, and the scattered elements began to gather around the new centres. Such a centre for eastern Russia was Moscow, until then an insignificant town, rarely mentioned in the chronicles, being the share of the younger and therefore less powerful princes. Under Daniel Aleksandrovitch[22] the town of Moscow constituted the whole principality. With the acquisition of Pereiaslavl (1302), Mozhaisk (1303), and Kolomna (1308) this region became somewhat more extended, but when it fell to the share of Ivan Danilovitch after the death of his brother Iuri, it was still very insignificant; and yet through its resources the princes of Moscow managed to become the first in eastern Russia and little by little to gather round them the whole of eastern Russia. The rise of the principality of Moscow is one of the most remarkable phenomena in the history of Russia. It is therefore not surprising that particular attention should have been directed towards it by historians, and by the light of their united investigations the phenomenon becomes sufficiently clear. In the thirteenth century, under the domination of the Tatars in eastern Russia, there was a continual struggle amongst the princes for the title of grand prince, to which they also strove to unite the possession of Vladimir. We also observe another distinctive feature of the time, which was that the princes did not remain to live in Vladimir, but only strove to unite it to their own possessions, and thus augment them, and, if possible, secure them for their families. The struggle was for the preponderance of one family over another through the extension of its territorial possessions. In the Kievan period, whoever became prince of Kiev, removed to Kiev, and named someone of his own family as ruler in his own principality, so that if Kiev were lost and it should pass into another family, he would not lose his own patrimony.