Answer:
fear
Explanation:
everyone fears what judgment theyll get once they die, if you were to make a religion that made them fear judgment, that would be the start, you tell them the rules the necessities etc. and the more people that know the more people that join and it would continue
The main cause was the Stock Market Crash of 1929.
They believed it was bad and went to any length the prevent it. (Not sure tho) Hope this helps
