@Dušan I use the hyphen to support the original idea of Czecho-Slovakia. That is a state of Czechs and Slovaks.
The idea of Czechoslovkia, a single Czechoslovak nation and Czechoslovak language came shortly after the creation of the state, when they realized that minorities are so big and they have too much power.
So Czechs and Slovaks joined into one entity and operated like that since then.
I know that you guys had elections after the war and all of that, but communists won didn’t they?
Read the “Years” section.
I’m on my phone now and I’ve typed too much already.