Complex sentence: It was written when Engels was 64 years of age and at the height of his intellectual power and contains a comprehensive historical view of the family in relation to the issues of class, female subjugation and private property.
Split into simpler sentences: It was written when Engels was 64 years of age and at the height of his intellectual power. It contains a comprehensive historical view of the family in relation to issues of class, female subjugation and private property.