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Urbanization & megacities

Grade 10 · Geography · Free lesson

Hi there! Today we are going to explore how cities grow and why millions of people move to giant urban areas called megacities.

People settle in specific places because of physical features like rivers and flat land. These natural features influence where cities start and how large they can grow.

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When cities grow to hold over 10 million people, we call them megacities. This rapid growth, or urbanization, is driven by people moving from rural farms to cities in search of better jobs and schools.

Rural FarmMegacity

We can analyze how settlement patterns change over time by looking at push and pull factors. For example, a lack of rural jobs pushes people away, while city technology pulls them in.

PUSH FACTORS• Few local jobs• Crop failurePULL FACTORS• Better wages• Modern hospitals
✏️ Worked example

Explain how physical features and human processes changed Tokyo, Japan, into the largest megacity in the world.

  1. Identify the physical features: Tokyo is located on the Kanto Plain, which is the largest flat area in mountainous Japan. This flat land made it physically possible for a massive city to expand.
  2. Identify the human processes: As Japan industrialized, millions of people moved from rural farms to Tokyo for manufacturing and technology jobs.
  3. Analyze the connection: The flat land (physical) allowed developers to build extensive rail systems, which pulled even more people (human) into the city center.
  4. Conclude with the result: The combination of a flat plain and rapid job growth caused Tokyo's settlement pattern to expand into a megacity of over 37 million people.
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