Danube
Classified as an international waterway, it originates in the town of Donaueschingen, in the Black Forest of Germany, at the confluence of the rivers Brigach and Breg. The Danube then flows southeast for about , passing through four capital cities (Vienna, Bratislava, Budapest and Belgrade) before emptying into the Black Sea via the Danube Delta in Romania and Ukraine.
Dnieper
In the three countries through which it flows it has essentially the same name, albeit pronounced differently:The river is mentioned both by the Ancient Greek historian Herodotus in the 5th century BC as (), as well as by Strabo; this name is Scythian (cf. Proto-Iranian "Hurú-stáHnam") or local population contemporary with the Herodotus' lifespan and translates as "wide land", referring most likely to the Pontic steppes (Ukrainian steppes). . Unless Icelandic Snorre Skald Sturlasson, in Ynglinga saga, meant Danube, which is rather unlikely, wrote that this river run through Great Sviþjoð (Great Sweden), and separate Asia from Europe (also named Enea, from the eponymous Aeneas). It is, Snorre explains, in his time called Tanais, in earlier times Tanakvisl, and Vanakvisl. This is the realm of the Vanir. To the east is Asia, and the realm of the Æsir. In Snorre Sturlasons perspective ancient peoples that were either later deified, or who practiced deification of their rulers, aka apotheosis.