In Animal Farm, how does Napoleon use propaganda effectively, and how does he change history?

As with
all dictators,uses propaganda as a means of consolidating his power. Having become the sole
ruler of the farm, he is determined to make sure that he remains in charge. Through his
propagandist-in-chief, he constantly churns out the message that everything he does is for the
good of the animals. We see this in one particularly notorious example when Squealer tries to
justify the pigs eating all the apples and drinking all the milk by claiming that they're only
doing it because they need the extra nourishment for their superior brain power. A shameless act
of greed is...