what would you describe as critical changes in american culture since the 1950's? consider changes in the landscape (suburbs vs. Cities), class stratification, deindustrialization, corporatizatio, transportation, gender roles, music and shopping? what would you argue are three critical social changes and why? please develop a detail description and analysis of these three changes. when do these changes take place? why are these changes important for understanding American culture? what are the longer implications of these changes'?