The european nations that created artificial boundaries for the countries of africa created problems because they did not take into consideration which of these
a. the different climates of each country
b. the different sizes of each country
c. the different natural resources in each country
d. the different ethnic groups in each country

The European nations that created artificial boundaries for the countries of Africa created problems because they did not take: D. The different ethnic groups in each country into consideration.

Many African ethnicity do not recognize individual possession and only reconize group belongings. So when the European nations created the artificial boundaries to claim their lands, many Afircan Groups felt insulted and revolted against the European nations.