Question: what major events happened in the animal farm?
Answer: Frederick and his men destroy the windmill. ... 
Work is increased for all animals except pigs. ... 
The expulsion of Jones. ... 
The Battle of the Cowshed. ... 
Pigs begin to drink alcohol. ... 
Boxer is sold to the knackers. ... 
The pigs begin walking on two legs ("4 legs good, 2 legs better!")