Which literary franchise became the first book series to generate over $1 billion in merchandise sales separate from its book and film revenues?

The publishing industry has created some of the most lucrative merchandise empires in retail history. From magical wizarding worlds to dystopian futures, books that make the leap from page to product have transformed the retail landscape. Test your knowledge about the fascinating business side of literary franchises and how they've revolutionized cross-platform marketing and retail innovations.

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Harry Potter
The Hunger Games
The Lord of the Rings
Twilight