Which major publishing merger created the world's largest trade book publisher in 2013, controlling approximately 25% of the global English-language publishing market?

The publishing industry has seen dramatic consolidation over the past decades, with major corporations acquiring independent publishers and reshaping the landscape of literature production and distribution. These acquisitions have fundamentally altered how books reach readers, how authors negotiate contracts, and which voices gain prominence in the literary marketplace. Test your knowledge about one of the most significant publishing mergers in recent literary history.

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Penguin Random House (Bertelsmann and Pearson merger)
HarperCollins acquisition of Houghton Mifflin Harcourt
Simon & Schuster merger with Macmillan Publishers
Hachette Book Group's acquisition of Perseus Books