Slums were consequence for people migrating from the rural areas to the city.
The increasing and rampant moving from rural areas to the city gave rise to overpopulation in the cities which resulted in the rise of slums which are densely populated urban residential area which consist of closely packed, decrepit housing units in a situation of deteriorated or incomplete infrastructure, inhabited specially by impoverished citizens.
wholesome and necessary for the public Good. ... This charge refers to the fact that several of the colonies had been obliged from their establishment to submit their laws to the King for his approval.