Which major retailer revolutionized religious text distribution by introducing the first mainstream e-reader specifically marketed with access to sacred texts from multiple traditions?

The religious book market has undergone significant transformations in recent decades. From traditional brick-and-mortar religious bookstores to digital platforms, the way people access spiritual and philosophical texts has evolved dramatically. This trivia question focuses on a major retail innovation that changed how religious texts are distributed and consumed worldwide.

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Amazon (with the Kindle)
Barnes & Noble (with the Nook)
Apple (with the iPad)
Borders (with the Kobo)