The third fundamental cryptotypic signalling system underpinning Indo-European languages — alongside M-N- (Moon/Mana/Mind) and Rg/Rt/Reg (Right/Truth/Governance).
The D-N- sound connects: the Danaans (first Greeks in Homer), the Don/Donets/Dnieper/Dniester/Danube (Ukraine’s great rivers), the goddess *Danu (worshipped by the Tuatha de Danaan in Ireland and the Danavas in India), Daina (the guardian at Chinvat Bridge in Iranian religion), and Donn (Ireland’s Lord of Death, explicitly the grandson of the king of Scythia/Ukraine).