What does this quote means? “i have been a lucky man. to feel the intimacy of brothers is a marvelous thing in life. to feel the love of people whom we love is a fire that feeds our life. but to feel the affection that comes from those whom we do not know, from those unknown to us, who are watching over our sleep and solitude, over our dangers and our weaknesses – that is something still greater and more beautiful because it widens out the boundaries of our being, and unites all living things.” ?

the correct answer is the first option "the bolkshevik revolution". the passage makes reference to many of important events that occured in the revolution, such as the assemblies, in this case the animals are gathered in an assembly after a protest, the murder of fellow partners, the speeches given by the leader of the revolution, among other aspects. the last choice is possible, but in this passage in particular it is not emphasized the fight between the characters, that is the two pigs, that represent lenin and stallin.