How did the european redrawing of territorial boundaries according to western colonial needs affect africans?

It seems that you have missed the given choices for this question, but anyway here is the correct answer. The European redrawing of territorial boundaries according to Western colonial needs affected Africans since it aided in the equal division of natural resources. Hope this helps.

Use the formula: (n-2)×180, where n is the number of sides(18-2)×180= 28800, now this is the full exterior angle of 18-gon so you divide it by 18.28800÷18=160