Original sentence: Socialists criticized the 'factory system' for its use of child labor and the long hours and impoverishment the factory workers faced.Socialists criticized the disparity, suffering and injustices resulting from the concentration of property in the hands of the capitalist class
Edited sentence: Factory owners became very wealthy, while long hours and impoverishment faced the factory workers.Socialists criticized the suffering and injustices resulting from the concentration of property in the hands of the capitalist class