Why was there revolution in Czechoslovakia in1968?

The revolution in Czechoslovakia in 1968, known as the Prague Spring, was driven by a desire for political reform and greater freedom from Soviet control. Led by Alexander Dubček, the movement sought to implement socialism with a human face, promoting democratic freedoms, press liberation, and economic reforms. The increased openness and reforms alarmed the Soviet Union and its allies, leading to a military intervention in August 1968, which crushed the movement and reinstated a more repressive regime. The event highlighted the tensions between Eastern Bloc countries and the Soviet Union, as well as the yearning for self-determination among Czechoslovak citizens.