Which product development innovation in the 1450s dramatically increased access to religious texts and is credited with helping spark the Protestant Reformation?

The publishing of religious texts has evolved dramatically over centuries, from handwritten scrolls to mass-produced books to digital platforms. This evolution has shaped how religious communities access, study, and share their sacred texts. Today's religious publishing industry combines traditional reverence with modern product development strategies. Test your knowledge about a significant product development milestone in religious text publishing that revolutionized accessibility.

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Gutenberg's movable-type printing press, which first mass-produced the Bible
The creation of illuminated manuscripts by Benedictine monks
The development of papyrus scrolls replacing clay tablets
The introduction of vellum pages made from animal skin