The event that Kimani is explaining by saying that Africans did not draw their own borders is colonialism.
Colonialism was a process that the Europeans engaged in when in Africa that allowed them to take over African lands and territories.
When they took over these lands, they drew up boundaries that would separate the different lands that were taken amongst the various colonial powers. These boundaries were used by Africans at independence.
In conclusion, this is colonialism.
Find out more on colonialism at https://brainly.com/question/8048490.