The two measures are: <span>Comprehensiveness and conciseness
Comprehensiveness refers to whether the document include the necessary information that needed for the communication
conciseness refers to whether the necessary information is displayed in a full/complete fashion.
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<span>The correct answer is Can see the front of the vehicle in your rear view mirror. It can be daunting to overtake especially when you are behind a car that is moving slowly. It is therefore vital to ensure that you can see the car in your rear view mirror so that you are able to return to the driving lane.</span>
I believe the answer is: They are based on the arbitrary borders of old European empires
African continent was colonized by different european empire. To avoid conflicts among the european, they divided africa into several territories and dtermine which country has the jurisdiction over each territories. After African nations gained independence, they still use this separation as borders to differentiate one country with another.
