Where does “Chorvatsko” come from?

Chorvatsko (Czech) comes from Czech Chorvat, from Serbo-Croatian Hr̀vāt, from Proto-Slavic xorvatъ — Croat.

Ancestry of “Chorvatsko”, step by step

StepLanguageWordMeaning
1CzechChorvatCroatian person of Croatia
2Serbo-CroatianHr̀vāta Croat; Croat
3Proto-SlavicxorvatъCroat
Every word from Proto-Slavic xorvatъ →Every word from Serbo-Croatian Hr̀vāt →Every word from Czech Chorvat →