Which retail innovation most significantly increased access to religious texts in the 15th century?

Religious texts and spiritual teachings have been around for millennia, but the way people access these materials has drastically evolved. From ancient scrolls to modern digital platforms, the distribution of religious products has undergone fascinating transformations. Test your knowledge about how religious and philosophical content has been marketed, distributed, and consumed throughout history and in today's digital age.

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Gutenberg's printing press, which enabled mass production of Bibles
The establishment of monastery gift shops for pilgrims
Door-to-door scripture salespeople and traveling merchants
The creation of public reading rooms in churches and temples