3 ms·All of them, as specified in article 26 in the Treaty on the Creation of the Sovient Union.by sparkling 9y agoAll of them, as specified in article 26 in the Treaty on the Creation of the Sovient Union.Atropos 9y agohttps://en.m.wikipedia.org/wiki/Prague_Spring https://en.m.wikipedia.org/wiki/Prague_Springethelward 9y agoCzechoslovakia wasn't part of the USSR.