Friedrich Engels (28 November 1820 – 5 August 1895), also known as Frederick Engels, was Karl Marx's closest collaborator in developing Marxism. Engels gave Marx money, they coauthored The Communist Manifesto (1848), Engels wrote other texts and introductions to Marx's writings, and after Marx's death Engels completed volumes 2 and 3 of Das Kapital, on the basis of Marx’s uncompleted manuscripts and rough notes. He was also influential in promoting Marxism.
Engels was also a successful businessman, never allowing his communist principles and criticism of capitalist ways to interfere with the profitable operations of his firm. He also received money from his father, a factory owner. Therefore, Engels and Marx presumably personally were part of the supposed exploitation they criticized in their writings.
- Encyclopedia Britannica: Friedrich Engels
- Encyclopedia.com: Friedrich Engels
- Encyclopedia.com: Engels, Friedrich (1820–1895)
- Friedrich Engels https://www.britannica.com/biography/Friedrich-Engels