What were the negative consequences of colonial rule for the african continent

When Europeans met to decide on official borders for the nations in Africa, there were no African representatives at the meeting, so they simply drew lines wherever they wanted and claimed land that wasn't theirs.

Imperialism was used to control the nations; they would take all of the resources, manufacture them into goods, and force the African people to buy the goods. So, the Europeans made money, and the African nations got nothing.

Overall, the situation was caused by Europeans' economic greed and the yearning to expand.