The association with places over a long time can build feelings of security and at-homeness. Individual personalities and lives are diminished without the development of strong social networks and ties within a place. The fabric of a community may be altered when there are few people left to ensure continuity and a sense of historical context in relation to the place. Other forces at work in modern society may do additional damage to feelings of being-in-place. Mass media, consumerism and international styles of architecture cause of homogenization of culture makes many urban places similar in material form through symbolization that is not tied to local culture. A sense of "dwelling" is often lacking in that the organic wholeness of place has become fractured. Modern landscapes and cityscapes tend to create an environment without significant places. Regional differences are also diminishing in the face of national media resulting in "no sense of place".