Final answer:
An industrial heartland is a concentrated area of a nation's industry, population, and political power, often urbanized with significant economic and political influence.
Step-by-step explanation:
An industrial heartland is defined as an area in which a nation's industry, population, and political power are concentrated in a "core" region. This core region features urbanization and industrialization, holding immense economic and political power as well as vast cultural activity. They are characterized by their advanced technology, corporate markets, and high standards of living. For instance, the northeastern United States, including cities like New York and Boston, and regions in Western Europe and eastern Asia, serve as industrial heartlands. These heartlands have traditionally held power, wealth, and opportunity, resulting in the best quality of life for their inhabitants and influencing global economies and politics.