Which innovation in religious product distribution is considered the first major 'product launch' that dramatically increased Bible accessibility to the general public?

Throughout history, religious texts have faced unique marketing and distribution challenges. From ancient scrolls to modern digital platforms, the methods of sharing spiritual wisdom have evolved dramatically. This trivia question explores a pivotal moment in the history of religious text distribution that transformed how these sacred works reached the masses and shaped modern religious publishing strategies.

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Gutenberg's printing press Bible (1455)
The King James Version translation (1611)
The first Bible smartphone app (YouVersion, 2008)
Mass-produced leather-bound pocket Bibles (1800s)