"Praha je hlavní město Česka."

Translation: Prague is the capital of Czechia.

[on-Rock]

Praha is the capital of Bohemia ?

[ion1122]

Bohemia is the western part of Czechia. Prague is the capital of both Bohemia and Czechia. The sentence here uses "Česko", the Czech word for Czechia, not the word for Bohemia, which is "Čechy".