"Animal Farm" is a satirical allegorical novel by George Orwell, first published in England in 1945. It tells the story of a group of farm animals who rebel against their human farmer, hoping to create a society where the animals can be equal, free, and happy. According to Orwell, Animal Farm reflects events leading up to the Russian Revolution of 1917 and then on into the Stalinist era of the Soviet Union.

Source: Wikipedia