Civilization does not take with blacks.
In 1822 Liberia was purchase by James Monroe and settled by 15000 free blacks from America,and another 3000 from the Caribbean under the auspices of the American Colonization Society .
Rather than serving as a civilizing influence on area natives, with in a couple generations they had reverted to the same level of ignorance, poverty, and brutality as their neighbors.
Haiti, declared it's independence in 1800, America' second republic has never been self supporting and would not exist if not for 216 years of US handouts.
Rhodesia, and South Africa, under white rule, were prosperous industrialized Western nations.
Under black rule, despite the richest gold and diamond mines in the world, they have reverted to typical 3rd world shitholes with rampant inflation, unemployment, poverty, and general mismanagement.