S(lo)venska

They did speak roughly the same vandal language

and again the slavic -ska thing

Check this out;

Jeg kopjeter en stol i paris (norwegian)
Jaz sem kupil en stol v parizu (slovene)

Remarkable isn't it

Damn.

yeah

That’s more similar than I’d ever think Swedish and Slovenian would be.

Or swedish;

Jag kopjer en stol i Paris

Moving on,

Belarus, then Russia

Oh

White russia

Probably because of the snow

Russia?

Means "land of the red haired people"

Rossi meaning red

Rossia

Russia

Okay, Bulgaria

Actually the russians still call themselfs "Rossia"

Bulgar-land

Want the origin of bulgar itself orrr

Nah, I already know.

Let me hear

Migration south of the Danube, fighting the Byzantines n’ shit, getting oppressed by the Ottomans, Independence, Balkan Wars, WWI + WW2, Communist dictatorship then here we are now.

Uh

Heavily generalized.

You didn't explain the origin of the word itself

Oooooooh.

You briefly explained their history

Shit.

ya

I’ll... look it up on my own time.

Anyway, Czechia.

No no I can explain

I know of it

Actually you can just observe

With the case of slovene "betatism" which happens to shift the letter v into b bulgar becomes logical meaning "vulgar" you might think thats where the term comes from but it's just linguistic coinsidence. Considering the slovenians still use the classic "bolgar" name it's easily recognizable at this point.
Volga-r means "man from the shores of lake Volga"