Final answer:
European imperialism in Africa resulted in negative impacts such as violent European rule, exploitation, forced labor, and severe social and economic disruptions alongside a few improvements in infrastructure and governance.
Step-by-step explanation:
The effects of European imperialism on Africa were profound. Imperialism involved violent rule by European governments, extraction of raw materials, exploitation of native labor, forced labor, taxation, spread of diseases, and increased conflict.
Despite the brutality and exploitation, some positive effects included technology transfers and the introduction of structured governments and democratic processes in some areas. However, the atrocities, forced labor, and mass poverty caused by European conquests and the colonial system's lasting implications overshadowed these limited benefits.