Which retail innovation, introduced in the 1800s, revolutionized Bible distribution by making scriptures more accessible to ordinary people?

Throughout history, religious organizations have pioneered innovative retail approaches to distribute sacred texts and spiritual materials. From ancient scroll repositories to modern digital platforms, the business of spreading faith has evolved dramatically. This poll tests your knowledge about a significant retail innovation that revolutionized how religious texts reached the masses.

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The American Bible Society's 'penny Bibles' program that drastically reduced scripture costs through mass production techniques
The Vatican's subscription-based 'Papal Bulletin' delivery system that shipped monthly religious readings to Catholic households
The Methodist Book Concern's 'circuit rider libraries' where traveling preachers carried rotating collections of religious texts
The Religious Tract Society's 'penny post' system that delivered scripture pamphlets through national postal services