AP® United States History · Unit 9 · Topic 9.4

Deindustrialization and the New Economy

Deindustrialization is the long decline of American manufacturing jobs after 1980, as factories moved overseas or automated, even while the overall economy kept growing through services, finance, and technology.

Picture a steel town in Ohio in 1960: one mill employs half the men in the county, pays enough to buy a house and send kids to college, and backs a strong local union. By the 1980s that mill is closing. Cheaper steel comes from South Korea, cheaper labor from Mexico, and new machines do the work of a hundred welders. Multiply that story across the Rust Belt and you get deindustrialization: factories closing or moving abroad, manufacturing employment falling for decades. But national employment did not fall. It rose. The jobs just moved, from factory floors to hospitals, offices, warehouses, and server farms. The country got richer in aggregate while specific towns emptied out.

The mechanics show up clearly in a supply chain. A single smartphone might have chips designed in California, fabricated in Taiwan, assembled with components from Japan and South Korea, and put together in a Chinese factory, then sold worldwide. Lower shipping costs, trade agreements, and container ships made this profitable; American firms kept design, marketing, and finance at home and sent the physical labor elsewhere. Meanwhile the personal computer and then the internet reshaped what firms needed workers for: less brute assembly, more coding, data analysis, logistics, and customer service. New fields, Silicon Valley software and Wall Street finance, demanded very different skills than the old industrial economy.

That shift reshaped income distribution. As unions shrank with manufacturing, and as finance, tech, and executive pay climbed, the share of national income flowing to the top one percent rose sharply after 1970, reversing the relatively flatter distribution of the postwar decades. Deindustrialization connects directly to the era's politics: displaced workers in former industrial states became a central force in debates over trade, immigration, and economic policy through the 1990s and beyond.

Key terms

Deindustrialization
The long-term decline of manufacturing jobs and factories in a region or country.
Rust Belt
The region of the northern Midwest and Northeast whose economy once depended heavily on manufacturing and steel.
Service economy
An economy where most jobs and income come from services like finance, healthcare, and retail rather than manufacturing.
Income inequality
The uneven distribution of income across a population, often measured by the share going to top earners.
Outsourcing
Moving production or jobs to another company or country, usually to cut labor costs.

Watch it explained

  1. How it worksWalk me through a supply chain that turns one product into parts made in six countries.
  2. Worked exampleShow me manufacturing employment falling while total employment rises from 1980 to 2015.
  3. How it worksHow does the personal computer and then the internet change what a firm needs workers for?
  4. Worked exampleDraw the share of national income going to the top 1 percent from 1970 to today.

Check yourself

Your turn1 of 2
Between 1980 and 2015, total American employment grew substantially even as manufacturing employment specifically declined significantly, with many factory jobs disappearing from traditional industrial towns. What does this combination most directly reveal about how the American economy changed during this period?

End of topic.