Throughout the book, the pigs undergo a transformation from being farm animals to being in charge of the farm animals. They become their own social class and work on finding ways to set themselves apart. How do they do this?

The most I remember from this book is that after their head chief (forgot his name) dies the animals scare their owners away and take over the farm (self employed kind of). Now they have a set of rules that keep their farm in check. But since the pigs are the smartest of them all, they keep changing the rules to their liking. The other animals don’t realize until it’s too late. At the end of the book, the other animals see the pigs having drinks with the rival farm owners and they bombard the house and chase the pigs and rivals away. That’s all I remember, sorry.

The meaning of the word in this sentence is unneeded