What recent phenomenon allows middle-class homeowners to have physical security and freedom from exposure to the social problems of the inner city?

Question

Quizplus · Accepted Answer

Private communities, such as gated neighborhoods or homeowner associations, offer middle-class homeowners physical security through restricted access and private security services. These communities also provide a degree of freedom from exposure to the social problems commonly found in inner-city areas, such as crime and poverty. The other choices, edge city and gentrification, may also contribute to changes in the urban landscape, but do not directly address the physical security and social isolation of middle-class homeowners.

What Recent Phenomenon Allows Middle-Class Homeowners to Have Physical Security