Al-Shammari, Ashraq Ali Hussain, and Abbas Ali Hussein Al-Shammari. “Historical Materialism, According to The Views of The Philosophers Marx And Engels, The Negro Revolution As An Example”. International Journal of Psychosocial Rehabilitation, vol. 24, no. 7, Sept. 2020, pp. 2281-6, https://doi.org/10.61841/6hsx9272.