Which retail innovation revolutionized the distribution of religious texts in the 15th century, making scripture more accessible to the general public?

Throughout history, religious organizations have adapted to changing times with innovative retail and marketing approaches. From ancient temple markets to modern e-commerce platforms, faith communities have found creative ways to distribute religious goods and spread their teachings. This poll tests your knowledge about a significant retail innovation in the religious marketplace that revolutionized access to sacred texts.

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Gutenberg's printing press, which allowed mass production of Bibles at significantly lower costs
The monastic scriptoria system, which centralized handwritten manuscript production
The church door bulletin board system, which provided weekly scripture excerpts
Traveling merchant guilds specializing in religious artifact distribution