Which packaging innovation in religious publishing is credited with making sacred texts more accessible to the average believer in the 20th century?

In the world of religious publishing, innovation in packaging and presentation has transformed how sacred texts are consumed and shared among believers. From ancient scrolls to digital apps, the evolution of religious text formats represents both technological advancement and shifting spiritual practices. This poll tests your knowledge about a significant packaging innovation in religious publishing that changed accessibility to sacred texts.

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The introduction of pocket-sized, leather-bound Bibles with ultra-thin pages
The development of illuminated manuscript reproduction techniques
The creation of scroll-format texts with protective carbon cases
The implementation of gold-leaf edging on premium religious texts