Which product innovation is credited with making the Bible the first mass-produced book and revolutionizing religious text accessibility in the 15th century?

The printing and publishing of religious texts has evolved dramatically over centuries, transforming how spiritual knowledge is accessed and shared. From ancient hand-copied manuscripts to modern digital platforms, the industry behind religious publications has shaped spiritual practice worldwide. This trivia question focuses on a revolutionary product that transformed access to religious texts and democratized spiritual knowledge in Western civilization.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Gutenberg's movable-type printing press
The Codex Vaticanus binding technique
Luther's German translation distribution system
The Vatican's papal scroll reproduction method