Following the coup d'état of February 1948, when the Communist Party of Czechoslovakia seized power with the support of the Soviet Union, the country was declared a people's republic after the Ninth-of-May Constitution became effective.
Tras o Golpe de estado de 1948, que supuxo a toma do poder polo Partido Comunista de Checoslovaquia co apoio da URSS, o país declarouse unha república popular logo que a Constitución do Nove de Maio entrara en vigor.