9. She / Henry Ryder Haggard
(Approx. 83 million copies)
This book has also been a hit for more than a century – since it was first printed in 1887, new editions of it continue to appear. Ryder Haggard, an adventurer who spent a lot of time in Africa, writes here about a British scholar and his assistant who find themselves in a lost African kingdom, in which a tribe is led by a mysterious white woman known as “she who must be obeyed.”