Jack London 
The Strength of the Strong (Annotated) [EPUB ebook] 

• This edition includes the following editor’s introduction: Jack London, an infinite passion for adventure that drove all his work

Originally published in 1914, 'The Strength of the Strong’ is a collection of eight short stories by American author Jack London, including the title work.
Jack London used some of these stories to advance his views on socialism and highlight the problems of the working classes. He also continued to look back with prehistoric tales, but also included
The Unparalleled Invasion, which looks to the future with a Chinese invasion of the world later in the 20th century.
“The Strength of the Strong” includes the following stories:
The Strength of the Strong,
South of the Slot,
The Unparalleled Invasion,
The Enemy of All the World,
The Dream of Debs,
The Sea-Farmer,
Samuel and
The Heathen.