Chapter 3 of "Animal Farm" focuses on the initial successes of the animals after the rebellion. The pigs, particularly Snowball and Napoleon, take charge of organizing the farm's operations and educating the other animals. They establish the principles of Animalism, emphasize teamwork, and work on improving productivity, but disparities begin to emerge as the pigs assume leadership roles and begin to enjoy privileges. Tensions rise as the pigs start to manipulate the farm's resources for their benefit, setting the stage for future conflicts.
Boxer
Chapter 10.
I believe it was Old Major in Chapter 1 of Animal Farm.
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)
By reading the chapter and noting how the others talk or think of and how they treat Snowball.
Chapter 2
Depends on the chapter.
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.
In Chapter 6 of Animal Farm, Napolean uses Snowball as a scapegoat, because he can no longer defend himself now that he has been driven off the farm.