The demographic changes shown in the table contributed to which of the following developments by the 1980s?

Manufacturing in urban areas experienced challenges during the late 20th century, including deindustrialization and the movement of jobs overseas. The demographic shifts toward suburban living did not contribute to the growth of manufacturing but rather indicated a decline in urban industrial employment.

Federal investments in public transportation were often targeted at urban areas, where public transit needs were more pronounced. The shift toward suburban living typically reduced the demand for public transportation investment, as suburbs are generally designed around personal vehicle use rather than mass transit systems.

The counterculture movement was more prominent in urban areas during the 1960s and 1970s and was characterized by its rejection of traditional values. By the 1980s, the demographic shifts toward suburbs did not foster a counterculture; instead, they aligned more with conservative values and traditional social norms.

While some demographic shifts influenced political affiliations, the primary allegiance of African Americans historically leaned toward the Democratic Party, particularly during the 1980s, due to a range of social and economic issues that resonated more with Democratic policies than Republican ones.