The article is devoted to consideration of what had Russia entered the North War for. The article gives a detailed analysis of concepts of Russian historians created in XVIII – the beginning of XX centuries. The following conclusions are drawn: there were two reasons for Russia to enter the war. Firstly, to return primordial Russian lands, which were lost in the Time of Trouble. Secondly, to strengthen positions in Baltics. The background of these conceptions is revealed
The article is devoted to consideration of what had Russia entered the North War for according to Soviet historians. The article gives a detailed analysis of their concepts . There are some points of view: to return primordial Russian lands, which were lost in the Time of Trouble and to strengthen positions in Baltics.
The article describes the representation of the largest Russian historian of the XIX century Sergey Solovyev about the Polish-Lithuanian unions in the context of his General theoretical views of the Russian historical process. Revealed the continuity of ideas of S. M. Solovyev with the views of his predecessors on this issue. Shown is the fate of ideas in S. M. Solovyev about the issue of Polish-Lithuanian unions.