Where does “Zweistromland” come from?

Zweistromland (German) comes from German ström, from Middle High German stroum, from Old High German stroum, from Proto-West Germanic straum, from Proto-Germanic straumaz, from Proto-Indo-European srowmos, from Proto-Indo-European srew-, from Proto-Indo-European ser- — to flow; to guard; to bind, to tie together.

Ancestry of “Zweistromland”, step by step

Zweistromland traces back through 3 separate lines of ancestry.

via German ström

StepLanguageWordMeaning
1Germanströmsingular imperative of strömen; first-person...
2Middle High Germanstroum
3Old High Germanstroum
4Proto-West Germanicstraumstream
5Proto-Germanicstraumazstream, current, river
6Proto-Indo-Europeansrowmosriver
7Proto-Indo-Europeansrew-to flow, stream
8Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together

via German zwei

StepLanguageWordMeaning
1Germanzweitwo
2Middle High Germanzwēnetwo
3Old High Germanzwēnetwo
4Proto-West Germanictwai-two
5Proto-Germanictwaitwo
6Proto-Indo-Europeandwóh₁two

via German land

StepLanguageWordMeaning
1Germanlandcountry territory of a nation
2Middle High Germanlantland; country
3Old High Germanlantland; country
4Proto-West Germaniclandland, area of ground
5Proto-Germaniclandąland, area of ground
6Proto-Indo-Europeanlendʰ-land, heath; loins
Every word from Proto-Indo-European ser-Every word from Proto-Indo-European srew-Every word from Proto-Indo-European srowmos