For decades particularly throughout the Cold War, African nations chose a side among the competing global powers. At the height of Soviet-American tensions in the 20th Century, African leaders felt compelled to choose an allegiance to one at the cost of other.
Frequently, African neighbours would be in direct competition and even conflict because of their alliance to East or West. Since the fall of the Iron Curtain in 1991, we have been living in a largely unipolar world where America served as the sole superpower.