Irony is heavily used in Chapter 9. An example is when the animals become smart enough to realize that Boxer is being sold to the horse knacker, Squealer is able to convince them that they are dumb.
Chapter 9 of "Animal Farm" by George Orwell contains various literary devices, including allegory, symbolism, and irony. The animals' struggle for power mirrors historical events, such as the Russian Revolution. The use of the pigs as symbols of corruption and manipulation highlights themes of totalitarianism and the corrupting nature of power. Irony is present in the animals' realization that they have become like their former human oppressors.
Chapter 10.
rule of three rhetorical questions emotive language hyperbole (deliberately exaggerating) repetition imperatives
I believe it was Old Major in Chapter 1 of Animal Farm.
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Snow ball
He is evil..
He is overthrown by the animals and kicked off of the farm in Chapter 4.
Old Major (the old boar who tells the other animals about the possible future of the farm in chapter 1)
Chapter 2
Depends on the chapter.
Boxer
In chapter 7 of Animal Farm, several animals are killed during an assembly of the animals. The animals are killed for being traitors against The Farm.