What has changed since this map was drawn?

(A) Political borders have reverted to their traditional ethnic boundaries. (B) Western economic interests have withdrawn from African affairs. (C) African nations have successfully adopted stable democratic governments. (D) African states have gained independence, but arbitrary colonial borders have persisted, resulting in ethnic violence.Explanation: In the post-colonial period, Africa has struggled with ethnic violence among rival groups who were artificially bound together within colonial borders. Most African nations retained their colonial borders (A). Western economic interests (B) have persisted to the present, particularly in the oil and diamond industries. African nations have struggled with political corruption and instability (C).