Such rapid assimilation should not surprise: in addition to the fact that there were much more Slavs, they were at a higher level of socio-political development than the natives. For example, the historian Vasily Klyuchevsky wrote that the wild Finnish tribes “did not have veche meetings”, so characteristic of the inhabitants of Kiev, Chernigov or Rostov and Suzdal. During the development of Zalesye, the Slavic colonists primarily settled not on free territories, but on lands already developed by the local Finnish population. Perhaps it is precisely because of this that some part of the Merya, long lived in the interfluve of the Volga and Oka, then went further into the impenetrable forests of the Volga region. Some scholars identify these people with the modern Mari or even with the Mordovians (Erzya and Moksha). Some researchers believe that Meria still left an impressive legacy in our language. For example, only the Eastern Slavs have the possessive lexical “I have” characteristic of Finno-Ugric languages. And indeed, a Pole, Czech or Croat in such a case will say “I have.” The influence of the Merian language also explains the peculiarity of the declension of masculine nouns, where in the genitive case, along with the common Slavic form -u, -th (many people, bring tea), there is a variant typical of Finnish languages -a, -i (many people, bring tea). Proponents of this theory also derive many Russian dialect words from Finnish languages.
It is difficult to judge how true this is – the Meryan language has not survived to the present day and has not left reliable written sources. It was not possible to find his echoes in the local dialects of the Russian language, and the attempts of some enthusiasts to restore or construct the Meryan lexical system in the scientific sense look dubious. The question of the participation of Meria and other Finnish-speaking peoples in the ethnogenesis of the Russian people is still debatable. In Russian folklore, there are no obvious and distinct echoes of contacts with Finnish tribes who lived in this territory before the arrival of the Slavs. Most likely, this once again confirms the rapid and natural nature of their possible assimilation… However, in recent years, the movement of Meryan ethnofuturism has been rapidly developing in Russia, and interest in the history of the Finno-Ugric peoples has been noticeably growing. This is also manifested in the desire of individual enthusiasts to prove that the contribution of the Meryans to the formation of the Russian people was more significant than is still commonly believed. Some even try to artificially construct new sub-ethnic identities (for example, katskars in the Yaroslavl region) and prove that they, along with the Sitskars and Mologzhanians, remained the only direct descendants of the Meryan people. In any case, at the dawn of Russian history, the impact of the measure on the further development of our country was very noticeable. The modern archaeologist Andrei Leontyev believes that the history of this small Finnish people has essentially become the prehistory of North-Eastern Russia: “The geography of settlement prevailing in the era of mary, the external and internal relations of certain regions, largely determined the features of the formation of the original territory and centers of the Rostov principality.” Subsequently, the Rostov principality was transformed into the Rostov-Suzdal land (Suzdal-Vladimir Russia), which became the forerunner of the Grand Duchy of Moscow and the Russian state. As for the ignorant deniers of the Slavic origin of the Russian people, they should remember the following. Ethnic identity is primarily determined not by geneticists and anthropologists with their haplogroups and skullcuts, but by the national culture and language with which people relate to themselves. History knows many examples when completely different ethnic groups participated in the formation of many great peoples. The remarkable Russian writer Konstantin Ushinsky (buried, by the way, in Kiev) as early as the 19th century wisely remarked that “the Finnish tribe… it’s some kind of cement on which all the new northern, European states were laid, which even more applies to Russia. The Swedes, Danes, inhabitants of the entire Baltic coastal zone, Russians – all begin their history with some silent disappearance of Finnish tribes. It seems that they themselves constitute a prehistoric element and are dispersed along with the darkness that covers the life of a European person “…” Not your brothers to us "https://news.mail.ru/society/32637205/".
Russia – in Finnish Venäjä (read “veneia”); Estonian Venemaa (read “venemaa”, literally “land of boats”), apparently from the Wends, Wends – the ancient Slavic tribe; in Hungarian Oroszország (read “orosorsag”, literally “rosov country). Compare:" As for the name “Rus”, here we are talking about a pirate team with a name led by Rurik, somewhat consonant by chance, which gave rise to later confusion. Members A.M. in the book “In the footsteps