During this consolidation of Russian lands, a return migration, or re-colonization, was taking place by descendants of the earlier Russian peoples who had fled to the west instead of the northeast.
By 16th Century, middle and upper Dniepr regions
were populated by two new ethnic nations, with variant
forms of the Russian language –
Little Rus (Ukrainians) and Byelorussians (White Russians).
1547 the first title of
Tsar assumed by