It was used to stop all attack from outsiders
Among benefits of the ethnic, language and religious diversity in Africa one may single out the ability to learn from the different ethnic groups and build interconnections between them, thus establishing a successful, well-functioning multicultural society.
Speaking about pitfalls, when one deals with such a great cultural diversity, there is always a possibility of disagreement on the cultural ground, which may in the worst case even lead to murder, for instance, when there is a collision of religious viewpoints.
The two examples are Birth certificate and title to property.
100 * (2/3) ~ 66.67
Round up, because you need a whole number which is at least 66.67
And your final answer is 67.
