Complex sentence: At the 22nd Party Congress, Khrushchev declared an end to the dictatorship of the proletariat and the establishment of the All-People's State which would strengthen collective decision-making within such government institutions as the Supreme Soviet for instance.
Split into simpler sentences: At the 22nd Party Congress, Khrushchev declared an end to the dictatorship of the proletariat and the establishment of the All-People's State. The All-People's State would strengthen collective decision-making within such government institutions as the Supreme Soviet for instance.