That’s why David Livingstone, when he went to Africa as a catholic missionary, said that the first step of missions is to destroy the local culture. Destroy it through capitalism, because as you create a desire for Western goods, they will realize how worthless they are and they will listen to the missionary about their God. That is an effective strategy, by the way.
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The Pirahã: People Who Define Happiness Without God
http://ffrf.org/publications/freethought-today/articles/the-pirahae-people-who-define-happiness-without-god/