How did the European Colonial Era impact the Geography of Sub-Saharan Africa?

On the map below, which of the following rivers is identified by blue? the huang he river the yangtze river the han river the naktong river

Which are evidence of the seafloor spreading? a. molten material b. magnetic stripes c. continental material d. drilled core samples e. ocean water samples

In the scramble for africa, european powers drew boundaries and created states that benefitted the colonizers while ignoring the needs of the local populations. what effects did this policy have on the indigenous people following independence?