In 2007, Nigeria was Africa’s most populous country and the world’s eighthlargest oil exporter. Yet it ranked only 159 out of 177 countries on the United Nations’ Human Development Index. In other words, much of Nigeria’s population lived in wretched poverty.

a) Do an Internet search on Nigeria to see what you can find about its government.

b) Is the evidence you uncovered consistent with the results in Figure 11.4?