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"

The turks still call them Bulgaristan

hinting their tartar history

Czechia?

The story of Czech, Lech and Rus

Easy as that

Or in our dialect Čeh means "small naughty, playful boy"

But probably shifted in meaning

@Ｋ▲ＩＳＥＲ rip

Did you knew that the original Philadelphia is in Turkey, it was one of the Biblical Asian Churches.

How come the Unitedstatian one became more famous than it is beyond me.

@KoalaBear Oh you mentioned Sorbs, did you heard of a city with name very similar to Ljubjlana.

Lübeck was originally called Liubice, today it's the Alt-Lübeck part old town.

It was a seat of the Polabian Obotrites.

https://upload.wikimedia.org/wikipedia/commons/2/25/Nie_jestesmy_tu_od_wczoraj.jpg

Here it was even featured in the Polish communist propaganda.

"We aren't here since yesterday, we had reached far to the west."