How do Frantz Fanon and Vladimir Lenin “stretch” or update Karl Marx’s theories to be applicable for their own context?

How do Frantz Fanon and Vladimir Lenin “stretch” or update Karl Marx’s theories to be applicable for their own context? How do they accomplish this while adding to, rather than refuting, Marx’s theories? What do they keep from Marx’s analysis, and what do they update or modify?

Please answer in at least 5 pages, with 5 sources as well