The Lord Of The Rings: Facts About J.R.R. Tolkien’s Saga
The Hobbit was the first published book by Tolkien about Middle-earth in 1937. This became a hit and Tolkien was expected to do a sequel. However, based on the article in Mental Floss, the writer pitched The Silmarillion instead which was a prequel detailing the inception of Middle-earth and its diversity of cultures.
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