Welcome to the World on the Move!
In this chapter, we are going to explore Migration. Why do people leave their homes? Why do they choose one city over another? And what happens to the places they leave behind? Migration is one of the most dynamic parts of Geography because it’s about people, their dreams, and the challenges they face. Whether it’s moving to the next street or across the ocean, migration changes our world every day. Don't worry if some of the terms seem new; we will break them down step-by-step!
5.1 Migration as a Component of Population Change
Migration is simply the movement of people from one place to another. However, for Geographers, it’s not just a weekend holiday! To be officially counted as "migration" in the syllabus, the movement must be for more than one year.
Push and Pull Factors
Think of migration like a magnet. Some things "shove" you away from your current home, while others "pull" you toward a new one.
- Push Factors: Negative things about the source area (where you live now). Examples: War, lack of jobs, famine, or natural disasters.
- Pull Factors: Positive things about the destination (where you want to go). Examples: Better pay, better schools, safety, or a nicer climate.
The Role of Constraints and Obstacles
Even if you want to move, it’s not always easy. Geographers call these Intervening Obstacles. Imagine you want to move to another country, but there is a massive ocean in the way, or you can't get a legal visa. Those are obstacles!
Common Obstacles:
- Physical: Mountains, deserts, or distance.
- Economic: The high cost of travel.
- Political: Borders, passports, and visa requirements.
- Social: Leaving family behind or not speaking the language.
Processes and Patterns
Migration isn't random. It follows certain patterns:
1. Chain Migration: This is when one person moves, and then their family and friends follow them later. Think of it like a "chain" of people following the same link.
2. Distance Decay: People are more likely to move to a place that is close by. The further away a place is, the less likely people are to move there.
3. The Age Factor: Most migrants are young adults (aged 18–35). Why? Because they are looking for work and are usually healthy enough to travel.
Quick Review Box:
\( \text{Population Change} = (\text{Births} - \text{Deaths}) + (\text{Immigration} - \text{Emigration}) \)
Immigration = People coming IN. Emigration = People EXITING.
Key Takeaway
Migration is a permanent move (>1 year) driven by Push and Pull factors, but it is often limited by Intervening Obstacles like cost or borders.
5.2 Internal Migration (Within a Country)
Internal migration is when people move within the same country. This is much more common than moving to another country because it’s cheaper and usually requires no visa.
Rural–Urban and Urban–Rural Movements
1. Rural-to-Urban: Moving from the countryside to the city. This is huge in Low-Income Countries (LICs) where people move to cities like Lagos or Mumbai for better jobs.
2. Urban-to-Rural (Counter-urbanisation): Moving from the city to the countryside. This is common in High-Income Countries (HICs) like the UK or USA, where people want a quieter life and more space.
Stepped Migration
This is like climbing a ladder. Instead of moving from a tiny farm straight to a massive mega-city, a person might move to a small village first, then a medium town, and finally the capital city. This makes the move feel less scary and more manageable.
Intra-urban Movements
This is moving within the same city. For example, moving from a small apartment in the city center to a bigger house in the suburbs. This usually happens as people get older, get married, or earn more money.
Impacts of Internal Migration
On the Source Area (the place they left):
- Good: Less pressure on housing and food.
- Bad: Brain Drain (the smartest people leave) and an "ageing population" because only the old people stay behind.
On the Destination Area (the place they go):
- Good: More workers and a younger, more vibrant population.
- Bad: Overcrowding, traffic jams, and pressure on schools and hospitals.
Key Takeaway
Internal migration often follows a "step" pattern from small to large settlements. It helps cities grow but can leave rural areas struggling with fewer young workers.
5.3 International Migration
This is the movement across national borders. It is usually more complex because of laws and distance.
Voluntary vs. Forced Migration
This is a very important distinction!
- Voluntary Migration: You choose to move to improve your life. Example: Moving to Dubai for a high-paying job.
- Forced (Involuntary) Migration: You have to move to survive. Example: People fleeing a war in Syria or a flood in Bangladesh. These people are often called Refugees or Asylum Seekers.
Economic Migrants vs. Refugees
Economic Migrants move to find work. They are usually looking for a "pull" factor. Refugees are running away from a "push" factor (like persecution or danger).
Impacts of International Migration
One major impact is Remittances. This is the money that migrants send back home to their families. In some countries, these payments are a huge part of the national economy!
Did you know?
In some years, the amount of money sent home by migrants (remittances) is three times larger than all the foreign aid given by governments! It is a massive help for families in LICs.
Key Takeaway
International migration can be a choice (voluntary) or a necessity (forced). It creates a global connection through the flow of people and money (remittances).
5.4 The Management of International Migration
Countries try to control who comes in and who leaves. This is called Migration Management.
Why manage migration?
- To prevent overcrowding in cities.
- To ensure there are enough jobs for local citizens.
- To attract "skilled" workers (like doctors or engineers) while limiting "unskilled" workers.
Case Study Framework: International Migration Stream
For your exam, you need to know one specific "stream" (a route people take). A common example is the Mexico to USA stream.
1. Causes: High unemployment in Mexico (Push) vs. higher wages in the USA (Pull).
2. Character: Many are young males; many work in agriculture or construction.
3. Scale: Millions of people have moved over several decades.
4. Pattern: Many move to "border states" like Texas or California first.
5. Impacts: The USA gets cheap labor; Mexico receives billions in remittances but loses many young workers.
Common Mistake to Avoid: Don't just list facts! Make sure you can explain the impacts on both the place they left (Source) and the place they arrived (Destination).
Key Takeaway
Governments manage migration using visas and laws. To succeed in the exam, apply the "Causes, Scale, and Impacts" structure to your chosen case study.
Final Memory Trick: The "L-E-E" of Migration
If you get stuck, remember Everett Lee’s Model:
1. Location A (The Origin - Push factors)
2. Everything in between (The Obstacles - Mountains, Visas, Cost)
3. End Location (The Destination - Pull factors)
You've got this! Migration is just the story of people looking for a better "Location B."