Complex sentence: By the end of the novel, just as Orwell Animalism, with all of its communist ideals, is effectively abolished, and the pigs have become so indistinguishable from humans, the animals can no longer tell the pigs from men.
Split into simpler sentences: By the end of the novel, Animalism, with all of its communist ideals, is effectively abolished. The pigs have become so indistinguishable from humans that the animals can no longer tell the pigs from men.