In the final line of Animal Farm, George Orwell uses the novelistic technique of allegory to comment on the history of the Soviet Union. The novel tells the story of a group of animals who overthrow their human farmer and establish a socialist society. However, the animals' revolution is ultimately betrayed by the pigs, who take control of the farm and become just as oppressive as the humans they overthrew.
The final line of the novel is a powerful indictment of the Soviet Union and its betrayal of the ideals of the Russian Revolution. Orwell's use of allegory allows him to make this criticism in a way that is both clear and effective. By comparing the Soviet Union to a barnyard, Orwell is able to highlight the hypocrisy and corruption of the regime. The animals' inability to distinguish between the pigs and the humans is a metaphor for the way in which the Soviet people were brainwashed and controlled by the government.
Animal Farm is a classic example of how literature can be used to comment on political and social issues. Orwell's novel is a powerful reminder of the dangers of totalitarianism and the importance of fighting for freedom and democracy.