By+the+autumn+the+animals+were+tired+but+happy.

The quote "By the autumn the animals were tired but happy" resembles the situation of workers in Russia back under Stalin's rule. Under the five year's plan, the workers worked hard for their country and for their own better living status, which did made them tired but also gave them happiness with the rewards. This is an example proving or showing how //Animal Farm// does resemble Russian Revolution. After the revolution and during Stalin's rule, as this quote suggests, "many workers were excited by the task facing them and worked amazingly hard to achieve their targets", people did work hard. And as I mentioned above, with the achieved targets which are like chores in the //Animal Farm//, people gained happiness like how animals did too.