I am gonna guess the answer for this one is B. Teacher and Child ratios.
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The best and most correct answer among the choices provided by your question is the fourth choice or letter D. Most African countries have Unitary form of government.
A unitary state is a state governed as a single power in which the central government<span> is ultimately supreme and any administrative divisions (sub-national units) exercise only powers that the central </span>government chooses to delegate. The majority of states in the world have a unitary system of government<span>.
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So you don't have high population in one area, where food can run out faster than expected, people move out and make more food for the population, also there is food in other places, so people have more hunting ground.
