Construction and maintenance of roads and railways

The construction and maintenance of roads and railways in the desert areas and equatorial regions is difficult. Discuss? 2011(P)

The deserts and equatorial regions are such regions of the world where the physical environment is very harsh for the human population. The vast deserts extending from the Sahara in Africa. The equatorial region supports a small population, which practices shifting, or subsistence agriculture or animal rearing. Due to less population and unorganized agriculture, the construction of roads and railways and their maintenance is difficult.

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