(A) Mongolia is one of the least populated countries in Asia. It has about 3million population.
Nomadic herding is an ecological or near the ecological system of agriculture. It is carried on mainly to produce food for the family and to fulfil the needs of clothing, shelter, and recreation. It is the simplest form of pastoralism. It was mainly practiced in the African region and Angola being one of it.
(C) Port of Vancouver
It is a coastal seaport in western Canada.
(D) Bogota international airport.
It is situated In Columbia, South America.
It is a mega city and the capital of England.
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