Which innovative product packaging decision for religious texts in the 1800s dramatically increased accessibility and is credited with helping spread religious literacy worldwide?

Throughout history, sacred texts have evolved not just in content but in their physical packaging and presentation. From ancient scrolls to modern digital formats, the way religious texts are packaged and distributed reflects technological advances, cultural values, and spiritual priorities. This trivia question explores an interesting innovation in religious text packaging that created significant impact in accessibility and distribution.

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The Oxford Bible's introduction of leather-bound pocket editions with gold leaf pages
The American Bible Society's creation of inexpensive paperback Bibles at one-sixth the previous cost
The Vatican's limited edition illuminated manuscripts with special protective cases
The Buddhist Council's standardized scroll design with water-resistant bamboo casings