AP® Comparative Government and Politics · Unit 5 · Topic 5.8
Migration, Urbanization, and Population Change
Migration and urbanization happen when city wages, changing land use, and government policy all push people off the land and pull them toward a handful of big cities, often faster than those cities can build the infrastructure to absorb them.
The pattern repeats across very different countries: a huge share of the population leaves farming villages and resettles in a small number of major cities, over just a few decades. It looks like each country has its own unique story, and the local details do differ, but three forces recur almost everywhere. Urban wages sit far above rural wages, often several times higher, because industry and services concentrate in cities. Land use shifts as farms consolidate, mechanize, or get sold off, so fewer people are needed to work the same land. And governments frequently favor cities on purpose, investing in urban factories, ports, and infrastructure while leaving rural areas underfunded. Put those three together and you get a steady pull toward the same handful of urban centers, regardless of which country you're in.
This migration reshapes the places people leave and the places they arrive. Rural regions lose working-age adults, often leaving behind older residents and fewer hands to farm. Cities gain workers faster than they gain housing, water lines, sewers, or roads, because infrastructure takes years to plan and build while migrants arrive continuously. A city that doubles in population within fifteen years is a common outcome of this gap: the systems designed for the smaller, earlier population strain under the new load, producing water shortages, traffic congestion, and informal housing settlements.
This topic connects directly to how the six core countries responded to global economic pressure. China's rural-to-urban and west-to-east flows followed deliberate state policy opening coastal special economic zones. Mexico's post-1994 trade liberalization pulled migrants north toward maquiladora factories along the U.S. border. In both cases, migration is not random drift but a predictable response to where wages, policy, and investment concentrate.
Key terms
- Urbanization
- The growing share of a country's population living in cities rather than rural areas.
- Pull factor
- A condition in a destination, like higher wages or job availability, that draws migrants toward it.
- Push factor
- A condition in a migrant's home area, like shrinking farmland or low wages, that drives them to leave.
- Maquiladora
- A factory in Mexico, often near the U.S. border, that assembles imported parts into goods for export.
- Special economic zone
- A designated area with looser regulations and tax incentives meant to attract foreign investment and manufacturing.
Watch it explained
- How it worksHow do wages, land use, and government policy combine to pull workers out of the countryside?
- Worked exampleShow me China's rural to urban and west to east migration flows drawn on a map.
- How it worksWalk me through Mexican migration from the south to the northern maquiladora belt after 1994.
- Going furtherWhat happens to a city's infrastructure when its population doubles in fifteen years?
Check yourself
End of topic.