The population in cities are poised to grow more than the villages in the coming decades.Why? To answer this question we need to understand what is a city? A city is a populous confined place which has some sustainable competitive advantages over places not called cities. Take example of any big city in the world and you will find the reason for its existence.

e.g. New York City: It is one of the most populous cities of US. Its location on a large natural harbor has given it a unique advantage. Its mix of population which supports more than 25 of the fortune 500 companies of the world. More than 50% of New Yorkers travel to work using its mass transport system, » Read more: Urbanization of the world