Which retail innovation first made religious texts widely affordable to the general public in the 15th century?

The retail landscape for religious and philosophical texts has evolved dramatically over centuries. From ancient scrolls to digital platforms, the way we access spiritual wisdom has been transformed by innovations in retail. This poll tests your knowledge about a significant retail innovation that changed how religious texts are distributed and consumed worldwide. Consider how retail strategies have impacted accessibility to sacred texts across different communities.

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Gutenberg's printing press and mass production of Bibles
Subscription-based monastic copy services
Royal patronage distribution programs
Temple-based rental systems for sacred scrolls