Which literary series generated the most revenue through merchandise sales in the first five years after its initial publication?

In the competitive world of publishing, some literary works have become powerful brands with immense customer loyalty. These beloved franchises have expanded far beyond their original books into merchandising empires, theme parks, and global phenomena. This trivia question tests your knowledge about how certain literary works transformed into major commercial brands that revolutionized their industries.

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Harry Potter by J.K. Rowling
The Lord of the Rings by J.R.R. Tolkien
The Hunger Games by Suzanne Collins
Twilight by Stephenie Meyer