The purpose of the scientific article is to try to study a very complex problem related to figurative, historical, psychological oppositions of two relatively close and at the same time distant, even contradictory Slavic cultures - ie Ukrainian (European) and Russian (it is a hybrid, Euro-Asian, ie it has mixed features). Research methods and techniques ��� psychoanalysis, psychohistorical project of development of Ukrainian literature, which allows the perception of each culture as unique, and this is in the historical dramatic poem by Lesya Ukrainka "Boyarin" shifted and motivated by aggression, expansion of Moscow, an attempt at aggressive policy. Ukrainian Cossack, centurion, and later - Moscow boyars. Research results. The article substantiates the motives of moral and ethical and psychohistorical confrontations, which are not traditional age or family confrontations, as depicted in the socio-domestic novel "The Kaidashev Family" by Ivan Nechuy-Levytsky or in the socio-psychological novel, where the author is Panas Mirnyi. These oppositions consistently follow from socio-political and cultural-historical oppositions. Conclusions. It is clear that the author clearly points to the tragic geopolitical situation in Ukraine - it is a large territory, attractive for conquest. Ukraine's neighbor has a different cultural and religious orientation towards Asia. The writer points to the significant political maneuvers of the hetmans of the Ruin era, to the historical context of the political struggles of tsarist and boyar Moscow. Moscow's course was aimed at destroying the hetman's Cossack Ukraine. Oksana Perebyina understood this well - this is what destroys her physically. The intellect of the Ukrainian woman is sensitive to the tragedy of the homeland, it is reflected phenomenally in the modernist dramatic poem "Boyarynya" by Lesya Ukrainka.