Complex sentence: When the draft version was presented to the 14th plenum of the 10th Central Committee, critics saw it as a step backward because since the 6th Congress, diversified ownership of the means of production had been recognized.
Split into simpler sentences: When the draft version was presented to the 14th plenum of the 10th Central Committee. Critics of the draft saw it as a step backward because, since the 6th Congress, diversified ownership of the means of production had been recognized.