The advantages and disadvantages of a large population have long been a subject of discussion among economists.It has been argued that the supply of good land is limited.To feed a large population,inferior land must be cultivated and the good land worked intensively.Thus,each person produces less and this means a lower average income than could be obtained with a smaller population.Other economists have argued that a large population gives more scope for specialization and the development of facilities such as ports,roads and railways,which are not likely to be built unless there is a big demand to justify them.
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