Why did imperialism have a negative affect on Africa up to four paragraphs and no links

There were several negatives of colonialism for the Africans like resource depletion, labor exploitation, unfair taxation, lack of industrialization, dependence on cash crop economy, prohibition of trade, the breaking up of traditional African society and values, lack of political development, and ethnic rivals inside

Explanation:

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.