In the 1830s, which innovative product format revolutionized newspaper accessibility and led to the term 'penny press'?

Throughout history, certain product innovations have fundamentally transformed society and daily life. These breakthrough products often reflected the technological capabilities, cultural values, and needs of their era. This trivia question focuses on a pivotal 19th-century innovation that revolutionized an entire industry and changed how people interacted with information and media. Test your knowledge of this historic product development that had far-reaching social and economic impacts.

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The steam-powered rotary printing press that reduced newspaper costs
Subscription-based newspaper delivery services using the postal system
Illustrated broadsheets with wood engravings for the illiterate
Newspaper vending machines placed in major city centers