What Eastern bloc capital experienced a "Spring" in 1968 as its head of state attempted to institute "socialism with a human face"?

A) Warsaw
B) Budapest
C) Berlin
D) Prague
E) Bucharest

In 1968, Prague experienced the Prague Spring, where its leader, Alexander Dubček, attempted to implement reforms that would lead to "socialism with a human face," which included greater political freedom and democracy. This led to protests and demonstrations, but ultimately, the Soviet Union and other Eastern Bloc countries invaded Czechoslovakia and put an end to the Prague Spring.