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

In the world of literature and publishing, mergers and acquisitions have dramatically reshaped the industry landscape. Major publishing houses have consolidated over decades, creating powerful conglomerates that control significant market share. This poll tests your knowledge about one of the most influential brand mergers in the publishing world that changed how authors and readers connect with literature.

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Penguin Random House (formed when Penguin Group and Random House merged in 2013)
HarperCollins Publishers (formed when Harper & Row merged with William Collins & Sons in 1989)
Simon & Schuster Macmillan (formed when Simon & Schuster acquired Macmillan Publishers in 2001)
Hachette Holt (formed when Hachette Book Group merged with Henry Holt and Company in 2008)