6.3 – The Causes and Impacts of International Migration

6.3 Answers — The Causes and Impacts of International Migration
Section A — Recall
Questions 1–5
1.
Define the term economic migrant.
Answer

An economic migrant is a person who moves to another country voluntarily, mainly to find work or earn a higher income. They are not fleeing danger — they choose to move in order to improve their standard of living.

Key points: (1) moves voluntarily — not forced; (2) moves for economic reasons (work / income / standard of living).
Exam tip: Always include both parts — that the move is voluntary AND that the reason is economic. Missing either part will cost marks.
2.
State the difference between an asylum seeker and a refugee.
Answer

An asylum seeker has fled their home country and applied for official protection in another country, but their application has not yet been decided. They are still waiting for a decision.

A refugee has been officially recognised as needing protection because they were forced to flee war, violence, or persecution. Their status has been confirmed and they are legally protected.

The key difference: asylum seeker = waiting for a decision — refugee = decision approved and status confirmed.
Exam tip: This distinction is very commonly tested. Remember it as: asylum seeker = waiting; refugee = confirmed.
3.
State two push factors that can force people to leave their home country.
Answer

Accept any two of the following:

  • War, conflict, or persecution — violence makes life dangerous and unsafe
  • Unemployment or poverty — no jobs or very low income
  • Natural disasters such as floods, droughts, or earthquakes that destroy homes and farmland
  • Poor access to healthcare and education
  • Political instability or government oppression
Exam tip: Push factors are negative conditions that drive people away from their home country. Always link the factor to the reason it causes migration (e.g. “war makes life dangerous and forces people to flee”).
4.
State two pull factors that attract people to move to a new country.
Answer

Accept any two of the following:

  • Better job opportunities and higher wages
  • Safety, peace, and political stability
  • Better healthcare and education systems
  • Family reunification — joining relatives who have already moved
  • Higher overall quality of life (better housing, freedom, and services)
Exam tip: Pull factors are the positive conditions that attract people to a destination country. Make sure you can clearly contrast them with push factors.
5.
Name the country of origin and the destination country in the international migration case study covered in your notes.
Answer
Country of origin: Mexico
Destination country: United States of America (USA)
Exam tip: For any case study question, you must be able to name both countries immediately. If you cannot name them, you cannot answer case study questions in an exam.
Section B — Application
Questions 6–10
6.
Explain what brain drain means and describe one negative effect it has on the country of origin.
Answer

Brain drain is when skilled and educated workers — such as doctors, engineers, and teachers — leave the country of origin in search of better opportunities abroad.

One negative effect: the country of origin loses the trained professionals it needs to develop its economy and public services. For example, if doctors leave, there are fewer healthcare workers to treat the remaining population. This weakens the country’s healthcare system and slows down long-term economic development.

Brain drain = loss of skilled/educated workers to another country → weakens the workforce and slows development in the country of origin.
Exam tip: Name specific types of skilled workers (doctors, engineers, teachers) rather than just saying “skilled people.” Examiners reward specific detail. Also show the consequence, not just the definition.
7.
Explain why remittances are considered a positive impact of migration on the country of origin. Use the case study from your notes in your answer.
Answer

Remittances are money sent home by migrants working abroad. They are a positive impact because they boost household incomes and help families in the country of origin pay for essential needs such as housing, healthcare, and education — things they might otherwise not afford.

In the Mexico → USA case study, Mexico receives over \$50 billion in remittances per year — one of the highest amounts in the world. This money significantly supports the living standards of families left behind and contributes to the wider local economy.

Remittances are positive because they give families in the origin country income to cover basic needs. In Mexico, this amounts to over \$50 billion per year.
Exam tip: Always name the specific case study (Mexico → USA) and include a specific fact or figure (e.g. the remittances amount) when answering case study questions. It shows the examiner you know the detail.
8.
Describe two ways in which a large influx of migrants can cause problems for the destination country.
Answer

1. Pressure on public services: A large number of migrants arriving in a short time increases demand for housing, schools, and healthcare. If the infrastructure cannot keep pace with this growth, services become overcrowded and harder to access for the existing population as well as new arrivals.

2. Social tension: Differences in language and culture between migrants and the existing population can lead to misunderstanding or conflict if they are not managed well. This social tension can create difficulties within communities in the destination country.

Exam tip: Don’t just state a problem — explain the process. Say WHY it is a problem: more people → more demand → services are strained. Examiners reward cause and effect.
9.
Explain why development aid to origin countries is considered a more sustainable strategy for managing international migration than border controls.
Answer

Border controls (such as walls and patrols) try to stop migrants at the border, but they do not address the root causes of migration. The push factors in origin countries — poverty, conflict, lack of jobs — still exist, so the pressure to migrate continues.

Development aid, on the other hand, invests in reducing poverty, improving security, and creating jobs in origin countries. By reducing the push factors at the source, it decreases the reasons why people feel forced to leave in the first place.

This makes it more sustainable: it aims to reduce migration pressure over the long term by tackling the root causes, rather than simply managing the consequences. However, results are slow — development takes decades — and aid must be well managed to be effective.

Development aid is more sustainable because it reduces the push factors that cause migration, rather than just trying to stop migrants at the border.
Exam tip: The word “sustainable” means addressing root causes so that the problem reduces over time. Use this explanation in your answer. Always contrast with border controls to show you understand why development aid is better long-term.
10.
For the case study in your notes, describe one positive and one negative impact that migration has had on the migrants themselves.
Answer

Positive impact: Migrants gain access to higher wages and an improved standard of living. They can also access better healthcare and education for themselves and their children — opportunities that were limited in Mexico.

Negative impact: Migrants face a dangerous border crossing, with risks of extreme heat, dehydration, and exploitation. Once in the USA, undocumented migrants face an uncertain legal status and the risk of deportation, as well as language barriers, cultural adjustment, and possible discrimination.

Exam tip: Impacts on the migrant themselves are often forgotten in exam answers. Remember that there are THREE groups to consider: the migrant, the country of origin, and the destination country. Always think about all three.
Section C — Challenge
Questions 11–15
11.
A family has fled their home country because of a civil war. They have arrived in a new country and applied for official protection, but their application has not yet been decided.
  • (a) What type of migrant are the members of this family?
  • (b) If their application is approved, what type of migrant do they become?
  • (c) Explain two reasons why people in this situation might find the journey or the waiting period difficult.
Answer
(a) Type of migrant

They are asylum seekers. They have fled their home country and applied for protection, but their status has not yet been officially decided.

(b) After approval

They become refugees. Once their application is approved, they are officially recognised as needing protection and are legally protected in the new country.

(c) Two reasons the process is difficult

Reason 1 — Dangerous journey: To reach safety, migrants often cross hostile environments. They may face extreme heat, dehydration, and exploitation, particularly when crossing borders without authorisation. The journey itself can be life-threatening.

Reason 2 — Uncertain legal status during the wait: While their application is being reviewed, asylum seekers do not know whether they will be allowed to stay. This uncertainty is very stressful. They may also be separated from family left behind, face language barriers, and struggle to adjust to a new culture — all while their future remains undecided.

Exam tip: Scenario questions test whether you can apply your definitions in context — not just repeat them from memory. Always read the scenario carefully and identify which definition fits before answering.
12.
  • (a) Describe two strategies that governments use to manage international migration.
  • (b) Choose one of those strategies. Evaluate its effectiveness by giving one strength and one limitation.
Answer
(a) Two strategies

Accept any two from the following (with a brief description of each):

  • Border controls and physical barriers — governments build fences, walls, and checkpoints and deploy patrols to control who enters the country
  • Visa and work permit systems — migrants must apply for official permission to enter and work; countries select migrants based on their skills, qualifications, and job offers
  • Refugee camps and asylum processes — international organisations set up camps near conflict zones to provide temporary shelter, food, and medical care; countries also operate legal asylum processes for those seeking protection
  • Integration programmes — destination countries offer language classes, job training, housing support, and cultural orientation to help migrants settle and contribute to society
  • Development aid to origin countries — wealthier countries invest in education, jobs, and infrastructure in origin countries to reduce the push factors that drive migration
(b) Evaluation — example using border controls

Strength: Border controls are effective at reducing illegal border crossings in the short term and give governments immediate control over who enters the country.

Limitation: They are very expensive to maintain and can be criticised as inhumane. Most importantly, border controls do not address the root causes of migration — the push factors in origin countries still exist, so the underlying pressure to migrate continues. Determined migrants often find alternative routes.

Border controls: effective short-term → but expensive, does not address root causes, and does not stop migration permanently.
Exam tip: Evaluation always means giving both a strength AND a limitation. Simply describing a strategy without evaluating it will not earn full marks on “evaluate” questions.
13.
  • (a) Describe two push factors and two pull factors that explain the movement of people in the case study from your notes.
  • (b) Describe two impacts of this migration on the country of origin. Include at least one positive and one negative.
Answer
(a) Push and pull factors — Mexico → USA

Accept any two push factors and any two pull factors from the following:

Push factors (Mexico):

  • High poverty levels, especially in rural areas where wages are very low
  • High unemployment, particularly for unskilled workers
  • High crime rates and gang violence in some regions, making daily life unsafe
  • Limited access to quality healthcare and education in rural areas
  • Droughts and natural disasters affecting agriculture and food supply

Pull factors (USA):

  • Strong demand for labour in agriculture, construction, and service industries
  • Significantly higher wages — even for unskilled workers
  • Greater personal safety and political stability
  • Better healthcare and education systems
  • Family reunification — a large, established Mexican-American community makes settling easier
(b) Two impacts on Mexico (country of origin)

Positive: Mexico receives over \$50 billion in remittances per year. This money helps families pay for housing, healthcare, and education, and supports the local economy. This is one of the highest remittance amounts in the world.

Negative: Brain drain — Mexico loses skilled workers such as doctors, engineers, and teachers, weakening its workforce and slowing long-term economic development. Rural communities are also left with ageing populations as young people leave, and family separation causes long-term emotional and social problems.

Exam tip: For case study questions, always try to include a specific fact or figure (e.g. the remittances amount) to strengthen your answer. Vague answers score lower than specific, detailed ones.
14.
Describe the impacts of the migration covered in your case study on each of the following groups. Give at least one positive and one negative impact for each group.
  • (a) The migrants themselves
  • (b) The country of origin
  • (c) The destination country
Answer
(a) Impacts on the migrants themselves

Positive: Migrants gain access to higher wages and an improved standard of living. They can also access better healthcare and education for themselves and their children, and enjoy greater personal safety compared to life in Mexico.

Negative: Migrants face a dangerous border crossing with risks of extreme heat, dehydration, and exploitation. Once in the USA, undocumented migrants live with uncertain legal status and the risk of deportation. They may also experience language barriers, cultural adjustment difficulties, discrimination, and separation from family left behind in Mexico.

(b) Impacts on Mexico (country of origin)

Positive: Mexico receives over \$50 billion in remittances per year. This money helps families fund housing, healthcare, and education, and contributes to the local economy. Migration also reduces pressure on the job market in areas with high unemployment.

Negative: Brain drain — Mexico loses skilled workers such as doctors, engineers, and teachers, weakening its workforce and slowing long-term development. Rural communities are left with ageing populations as young people leave. Family separation causes long-term emotional and social problems in communities.

(c) Impacts on the USA (destination country)

Positive: Mexican migrants fill vital labour shortages in agriculture, food processing, construction, and hospitality — jobs that are difficult to fill otherwise. Migrants pay taxes and spend money, contributing to economic growth. Mexican culture has also enriched American society through food, music, and community life.

Negative: The large number of migrants puts pressure on housing, schools, and healthcare in border states. There is ongoing political controversy around undocumented immigration and border security. Social integration can also be challenging where language barriers and cultural differences are not well managed.

Exam tip: This type of question covers all three groups. A common mistake is to forget the impacts on the migrants themselves and only write about the two countries. Always plan your answer before writing to make sure you cover all parts.
15.

“Stopping migrants at the border is not enough — governments must also tackle the reasons why people migrate in the first place.”

  • (a) Describe one short-term strategy used to manage international migration and evaluate its effectiveness.
  • (b) Describe one long-term, sustainable strategy and explain why it is considered more effective in the long run.
Answer
(a) Short-term strategy — Border controls and physical barriers

Description: Governments build fences, walls, and checkpoints and deploy border patrols to control who enters the country. This aims to reduce illegal border crossings and manage the flow of migrants into the destination country.

Strength: Effective at reducing illegal crossings quickly, giving governments immediate control over who enters the country. It can reduce numbers in the short term.

Limitation: Very expensive to build and maintain. It can be criticised as inhumane. Most importantly, it does not address why people migrate — the root push factors (poverty, conflict, lack of opportunity) still exist in the origin country. Determined migrants often find alternative routes, so border controls do not solve the underlying problem.

Border controls = effective short-term but does not address root causes → migration pressure continues.
(b) Long-term sustainable strategy — Development aid to origin countries

Description: Wealthier countries invest in education, jobs, and infrastructure in countries that send large numbers of migrants. The aim is to reduce poverty, improve security, and create economic opportunities in origin countries — directly reducing the push factors that drive people to leave.

Why it is more effective long-term: Instead of trying to stop migrants at the border, development aid reduces the reasons why people feel they need to leave in the first place. As conditions in the origin country improve, fewer people are forced to migrate. This addresses the root causes rather than just managing the consequences, which is why it is considered the most sustainable approach.

Limitation: Results are very slow — development takes decades — and the strategy requires long-term funding and commitment from wealthier governments.

Development aid = sustainable because it reduces push factors at the source → long-term reduction in migration pressure, but results take decades.
Exam tip: For “evaluate” or “discuss” questions, structure your answer clearly: (1) describe the strategy, (2) give its strength, (3) give its limitation. Always end with a conclusion. Here: sustainable strategies are better long-term, but slower to produce results than enforcement strategies.

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