Chocolate was learned about when Europeans explored Africa. I do not know how did found out. I hope this answers the "when" part of the question
The correct answer is "It shows similarities with Stalin's Great Purge and reveals how dictators use fear to control people".
Stalin used diverse tactics to deceit the people and gain control over his image. Once he got to a position of perceived power, he used the secret police in the same way that Napoleon uses his dogs: to quiet down the opposition with the use of force and fear-spreading. Public displays of violence as a form of punishment result in a society controlled by fear, where everyone behaves according to the imposition of a tyrant or dictator.
Hope this is helpful to you!
