How do the pigs gain the rights to the cows milk?why do the other animals allow this to happen?what does this event suggest abour the power hierarchy on the farm?

The Pigs claim that they are the brainchild of this whole operation. They say that they need the optimum nutrients to be able to run the farm and keep it out of the hands of humans like farmer Jones. The animals are new and naive to this whole revolution thing. Old major was their visionary and Napoleon is very intimidating; they fear him and don't disagree with his edict. Power and hierarchy on the farm starts at Napoleon and filters down through the other pigs. The other animals have little say.