Final answer:
The mass killing in the Congo is less known due to the lack of historical education on colonialism in Africa, Eurocentric narratives, and a minimized recognition of African experiences and voices. Belgian imperialism and the consequent civil wars have resulted in long-term devastation, including genocides and millions of deaths from conflict and disease.
Step-by-step explanation:
The mass killing in the Congo between 1880 and 1920 is a stark example of the consequences of colonialism and remains relatively unknown in the United States and Europe for several reasons. Firstly, historical education in the U.S. and Europe often overlooks the complexities and atrocities of colonial history in Africa. Secondly, there is a lack of awareness around the long-lasting impacts of European actions during the colonial period, which includes favoring certain ethnic groups and exploiting resources, leading to prolonged conflict and devastation. Lastly, the narrative around African history is frequently shaped by a Eurocentric viewpoint, minimizing the voices and experiences of Africans themselves.
During the noted period, the Belgian imperialism in the Congo under King Leopold II led to horrific abuses against the local population in pursuit of economic gain, particularly from the rubber trade. This period coincided with the heinous acts against the Herero and Nama peoples by the German army, which is one of the first recognized genocides of the 20th century. Additionally, the complex web of conflicts involving various militia groups and regional powers in the subsequent Congo wars continued the cycle of violence, leading to an estimated 5.4 million deaths by 2008.