I would say that these ideas most likely appealed to so many people because t<span>hey promised a way for people to end worldly suffering.
People were sick of seeing other people, including themselves, suffer every single day in this rotten world, which is why they wanted to seek help somehow. They managed to find it in Buddhism, which recommended walking down the rightful path in order to end suffering and pain.
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Everyone that is below the established level of what can be called “Elite” is what the Proles are, in '1984'. The proletariat, by definition, is someone who works to survive. Therefore, anyone who has to work, to earn a living and survive, is Prole.
To make your point in a peaceful manner.
The whip is the person responsible for organizing the voters of the party.