○○○ palimpsest ⪢⪢
So we're looking at a very complex dynamic in which human populations emerged, they mixed, they separated to some degree.
Further populations emerged and mixed and colonized new areas.
http://qindex.info/i.php?x=6371
○○○ 1054 ⪢⪢
In 1054, after tensions between Rome and Constantinople, Christianity is split between the Orthodox and Catholic Churches. This
further widens the gap between the Slaves of the Kievan Rus' and the Polish Slaves who had converted to Catholicism.
http://qindex.info/i.php?x=11896