Food for thought from chapter 5 of March of the Titans: The Complete History of the White Race:
Born of the Black Sea
Many present-day whites are either direct or partial descendants of a great wave of white peoples who swept into Europe from about 5500 BC till around 500 BC.
These peoples, largely Nordic in terms of the white racial sub-groupings, had their original heartland in the region known today as central and southern Russia. Genetic studies of European populations which have emerged since the year 2000 have confirmed the Indo-European invasion.
Melt waters from the retreating ice-sheets at the end of the Pleistocene caused the world’s oceans to rise by almost 100 meters. In 5600 BC, the rising waters of the Mediterranean Sea burst through the narrow neck of the Bosporus, inundating and destroying the civilisations ringing the fertile Black Sea basin. It is this catastrophe which triggered the great Indo-European migrations and spawned the Biblical legend of the flood, familiar to adherents of the Christian faith.
From this heartland in northern Europe—the womb of nations (vagina gentium, as the Romans called the region) successive waves of Indo-European Nordic invaders swept down over a period of centuries into all parts of Europe and into the Near East, conquering or displacing the peoples they found.