Answer: Das Kapital, which was used as the rationale for centrally-planned economies.
Explanation: Karl Max born May 5th 1818 an economist, historian, sociologist, political theorist, etc is the author of the book, DAS KAPITAL. The book is a foundational theoretical text in materialist philosophy, economics and politics which seeks to proposes that the motivating force of capitalism is in the exploitation of labor. The book was a success and was used as the rationale for centrally-planned economies.