Complete the following sentence: "The Unbearable Lightness of Being" takes place mainly in Prague in the late 1960s and early 1970s. "The Unbearable Lightness of Being" takes place mainly in Prague in the late 1960s and early 1970s. •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
Invasion of Czechoslovakia by the Soviet Union and three other Warsaw Pact countries and its aftermath.