Urbanisation and the Growth of Cities
More than half the world now lives in urban areas, and most of the growth is in Asia and Africa. Cities grow both from people arriving and from births inside them, and housing and services usually arrive late.
What a learner can do afterwards
- Say what urbanisation means and roughly what share of the world now lives in urban areas
- Name the two ways a city's population grows: people arriving, and births inside the city
- Describe what an informal settlement is and why it forms
- Give one thing a city does better than scattered settlement, such as transport, services, or jobs per hectare
1 · Read
Urbanisation means a rising share of people living in towns and cities. Well over half the world is urban today, up from only three in a hundred in 1800. The tipping point came in 2008, when city dwellers first outnumbered rural ones.
American cities swelled between 1870 and 1920 as eleven million moved in from the countryside and millions of newcomers stayed where they landed. Factories ran all day and night, and workers on twelve-hour shifts had to live close by. By 1920 more Americans lived in towns and cities than outside them.
Cities grow only two ways: newcomers arriving, and more births than deaths inside. Keep movement and natural increase apart in every answer, since each needs its own proof. Two hundred years ago only Beijing held over a million people, while today more than five hundred cities do.
Remember what arrives late: sewers, water, housing, and services trail behind fast growth. Crowded rooms with no drains breed slums, disease, and fire, until codes, parks, and transit catch up. Name one city edge too, like jobs, transport, or services packed per hectare.
Cities swell from arrivals plus births, while housing and services trail behind.
More to read
20.2 Urbanization
Urbanisation is the rising share of people living in towns and cities. Today well over half the world is urban, and the share keeps climbing. Cities grow two ways only: newcomers arriving, and more births than deaths inside them. Hold those two engines apart in every answer. One is movement, the other is natural increase, and each needs different proof.
19.1 Urbanization and Its Challenges
American cities exploded in the late 1800s as factories pulled workers from farms and ships. Growth outran sewers, water and housing, so slums, disease and fires followed. Reformers answered with building codes, parks and transit. This story gives you the classic challenge plus response pattern. Name the strain, then name the fix, and your paragraph already has a backbone.
What is urban growth?
Cities start small and swell for clear reasons: farm tools need fewer hands, factories offer wages, and services cluster where people gather. Rivers, ports and rail lines seed the first settlement, then jobs pull the crowd. Growth feeds itself, since each newcomer is both a worker and a customer.
America moves to the city
Between 1870 and 1920, American city life flipped from exception to rule. Industrial jobs drew millions from the countryside and from abroad, until cities held the majority. Tenements packed families tight while trams and subways stretched streets outward. This movement shows both growth engines at once: arrivals plus births inside the city.
Explore more
2 · Watch
به انگلیسیTake it off screen
Where it sits
Learn first
Optional connections
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.