Therefore, the policies that emerge must be implementable, universal, sensitive and relevant to the local context. They must be participatory and collaborative. They must be inclusive and recognize the rights of minorities and vulnerable groups. Above all, the policies must be sustainable. This trend is not new, but relentless and has been marked by a remarkable increase in the absolute numbers of urban dwellers—from a yearly average of 57 million between 1990-2000 to 77million between 2010-2015. In 1990,43 per cent (2.3 billion) of the world’s population lived in urban areas, by 2015, this had grown to 54 per cent (4 billion).