Which 2013 merger created the world's largest book publisher, bringing together iconic imprints like Knopf, Doubleday, Vintage, and Penguin Classics under one corporate umbrella?

The publishing world has seen significant consolidation over the past decades, with major mergers reshaping the landscape of book production and distribution. These corporate maneuvers have had profound effects on authors, readers, and the entire literary ecosystem. Test your knowledge about one of the most significant publishing industry mergers that dramatically altered the book world.

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Penguin Random House (merger of Penguin Group and Random House)
HarperCollins Hachette (merger of HarperCollins and Hachette Book Group)
Simon & Macmillan (merger of Simon & Schuster and Macmillan Publishers)
Pearson McGraw-Hill (merger of Pearson Education and McGraw-Hill Education)