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This lesson introduces the core concepts of migration as a foundation for Edexcel A-Level Geography, Paper 2 (9GE0), Topic 8B: Migration, Identity and Sovereignty. You will explore the types, patterns and drivers of contemporary international migration and understand how globalisation has accelerated the movement of people across borders. This lesson addresses the Edexcel Enquiry Question (EQ1): "What are the impacts of globalisation on international migration?"
Migration sits at the heart of the globalisation story. The same shrinking-world processes that move goods, capital and information faster and cheaper than ever before also move people — but with a crucial difference. Goods, money and data cross borders with diminishing friction, yet the movement of people remains tightly policed by sovereign states. This asymmetry — near-free movement of capital, heavily restricted movement of labour — is the central tension of Topic 8B and the reason migration is such a contested political issue. Understanding why and how people move is the foundation for everything that follows: nation states, sovereignty, identity and global governance.
| Specification element | Where it appears in this lesson |
|---|---|
| Paper / Topic | Paper 2, Topic 8B (Migration, Identity and Sovereignty) — optional Global-Development route |
| Enquiry Question | EQ1: "What are the impacts of globalisation on international migration?" |
| AO1 (knowledge & understanding) | Defining migration; types (voluntary/forced, internal/international, temporary/permanent, regular/irregular); push–pull and migration theory (Lee, Ravenstein, Wallerstein); the scale and patterns of global migration; how globalisation accelerates flows |
| AO2 (application & analysis) | Applying theory to unfamiliar corridors; analysing why globalisation produces uneven, self-reinforcing migration patterns rather than random dispersal |
| AO3 (skills & data) | Interpreting a migrant-stock/net-migration table; calculating net migration, net migration rate and percentage change; describe → manipulate → explain → evaluate |
| Synoptic themes | Players (migrants, diaspora networks, states, smugglers, TNCs) · Attitudes & Actions (open-borders economic logic vs sovereign border control) · Futures & Uncertainty (whether globalisation will continue to accelerate migration, or whether nationalism and automation will slow it) |
This is the conceptual gateway to the whole topic. The analytical habit you build here — treating migration not as a stand-alone "topic" but as an integral consequence of globalisation — is exactly what lifts an answer from Level 2 to Level 3/4 in extended responses.
Migration is the movement of people from one place to another with the intention of settling, either temporarily or permanently, in the new location. It is one of the most fundamental processes in human geography, reshaping populations, economies, cultures and landscapes across every scale from local to global.
Migration is distinguished from other forms of human movement (such as commuting, tourism or nomadism) by its purposeful relocation and by its duration — migrants typically intend to stay in the destination for a significant period, whether months, years or permanently.
Exam Tip: The Edexcel specification requires you to understand migration at multiple scales — internal (within a country), regional (between neighbouring countries) and international (across continents). Always specify the scale of migration you are discussing in exam answers, and link it to globalisation processes where appropriate.
Migration can be classified along several dimensions. The most important distinctions for A-Level Geography are:
The distinction between voluntary and forced migration is often blurred in practice. A farmer in sub-Saharan Africa who moves to a city because drought has destroyed their livelihood is technically making a "choice", but the alternatives are destitution or starvation. The concept of survival migration (Betts, 2013) captures these grey areas — people who cross borders to escape existential threats that do not fit neatly into the legal definition of a refugee.
| Type | Definition | Example |
|---|---|---|
| Voluntary economic | Choosing to move for better employment or income | Polish plumbers migrating to the UK post-2004 EU enlargement |
| Forced / refugee | Compelled to flee conflict, persecution or disaster | Syrian refugees fleeing civil war to Turkey, Lebanon, Jordan |
| Internal rural-urban | Moving from countryside to city within the same country | Chinese rural workers migrating to Shenzhen or Shanghai |
| International skilled | Qualified professionals moving for career opportunities | Indian software engineers migrating to Silicon Valley |
| Seasonal / temporary | Short-term movement linked to specific work or activity | Mexican agricultural workers in California under H-2A visas |
| Irregular / undocumented | Migration without legal authorisation | Central Americans crossing the US-Mexico border without visas |
| Retirement | Older people moving to preferred environments | British retirees moving to Spain's Costa del Sol |
The most widely used theoretical framework for understanding migration drivers is Everett Lee's push-pull model. Lee identified four sets of factors that influence migration decisions:
graph LR
subgraph ORIGIN["ORIGIN (Push Factors)"]
A1["Unemployment"]
A2["Conflict / persecution"]
A3["Poverty / low wages"]
A4["Environmental hazards"]
A5["Lack of services"]
end
subgraph OBSTACLES["INTERVENING OBSTACLES"]
B1["Immigration laws"]
B2["Cost of travel"]
B3["Language barriers"]
B4["Physical barriers"]
end
subgraph DEST["DESTINATION (Pull Factors)"]
C1["Employment opportunities"]
C2["Higher wages"]
C3["Safety / political freedom"]
C4["Better services"]
C5["Family / diaspora"]
end
ORIGIN --> OBSTACLES --> DEST
style ORIGIN fill:#e53935,color:#fff
style OBSTACLES fill:#fdd835,color:#000
style DEST fill:#43a047,color:#fff
Exam Tip: Lee's model is an excellent starting point, but examiners reward students who go beyond it. Criticisms include: it oversimplifies complex decisions; it treats migrants as rational economic actors ignoring emotional, cultural and social factors; it does not explain why some people migrate and others in identical circumstances do not; and it underplays structural causes like colonialism, global inequality and the policies of destination states.
Ernst Georg Ravenstein was one of the first scholars to identify regularities in migration patterns. His "laws" include:
Immanuel Wallerstein's framework explains international migration as a product of the capitalist world-system. Core countries (wealthy, industrialised nations) create demand for cheap labour that is supplied by periphery and semi-periphery countries. Migration flows therefore follow the logic of capital accumulation — workers move from where labour is cheap to where it is expensive, while capital flows in the opposite direction.
This explains major migration corridors: Mexico to the USA, North Africa to Europe, South Asia to the Gulf States. In each case, workers from lower-income countries supply labour demanded by higher-income economies.
Wilbur Zelinsky linked migration to a country's stage of development, mirroring the demographic transition model. In his mobility transition, traditional pre-modern societies have very low mobility; as a country industrialises and urbanises, internal rural–urban migration surges and international emigration rises; at advanced stages, internal mobility becomes circulation (commuting, counter-urbanisation) and the country shifts from a net exporter to a net importer of migrants. This explains the "migration hump" — the counter-intuitive finding that emigration often rises as a poor country begins to develop (people gain the resources and aspirations to move) before falling at higher income levels. Mexico, South Korea and Poland have all traced parts of this curve: South Korea was a major labour exporter in the 1960s–70s and is now a net importer of migrant workers.
Douglas Massey's concept of cumulative causation explains why migration becomes self-perpetuating once established. The first migrants face high costs and risks, but each successful migrant lowers the costs for those who follow — by providing information, housing, job contacts and emotional support. Over time, migration becomes embedded in the culture of a sending community (a "culture of migration"), so that movement continues even after the original economic trigger has faded. This is why corridors persist for generations and why border enforcement struggles to suppress them: networks, not just wage gaps, sustain the flow.
Exam Tip: No single theory explains migration. The strongest answers combine frameworks — using Lee for the decision, Wallerstein for the structural cause, Zelinsky for the development stage and Massey for why corridors persist. Demonstrating that theories are complementary rather than competing is a Level 4 skill.
According to the UN International Organization for Migration (IOM), there were approximately 281 million international migrants in 2020, representing 3.6% of the global population. This number has more than tripled since 1970 (when it was approximately 84 million).
Key statistics:
Globalisation has accelerated international migration through several mechanisms:
The acceleration is not evenly distributed, however. Globalisation channels migration along specific, deepening corridors rather than dispersing it randomly, because networks, colonial-linguistic ties and TNC labour demand concentrate flows. The result is highly visible local concentrations: the EU's 2004 enlargement, for instance, brought so many Eastern European workers to Boston, Lincolnshire — drawn by food-processing and agricultural jobs — that by the 2011 Census it had the highest proportion of Eastern-European-born residents of any UK town, reshaping its high street, schools and politics. The same globalising forces that produce a national statistic (net migration) thus produce intensely place-specific outcomes — a synoptic link to diverse places (Topic 6).
| Decade | Estimated International Migrants (millions) | % of Global Population |
|---|---|---|
| 1970 | 84 | 2.3% |
| 1980 | 102 | 2.3% |
| 1990 | 153 | 2.9% |
| 2000 | 173 | 2.8% |
| 2010 | 221 | 3.2% |
| 2020 | 281 | 3.6% |
A migration corridor is a well-established route between an origin and destination country, sustained by economic connections, historical ties, geographical proximity and diaspora networks.
| Corridor | Estimated Migrants | Key Drivers |
|---|---|---|
| Mexico → USA | 11 million+ | Wage differentials (US wages 4–5× higher), geographical proximity, established diaspora, demand for low-skilled labour |
| India → Gulf States | 9 million+ | Construction and service sector demand, temporary contract work, remittance economy |
| Poland → UK/Germany | 2 million+ (UK) | EU free movement (post-2004), wage differentials, English language skills |
| Philippines → Gulf/USA | 6 million+ | Government-supported labour export, nursing and domestic work demand, remittances (10% of GDP) |
| Syria → Turkey/Lebanon/Germany | 6+ million refugees | Civil war, proximity, EU refugee resettlement, diaspora networks |
| North Africa → Southern Europe | 3 million+ | Colonial linguistic ties (French), proximity across Mediterranean, economic disparity |
Migration is both a cause and a consequence of globalisation. Globalisation creates the conditions for migration (economic inequality, transport links, information flows), and migration in turn deepens globalisation by creating diaspora networks, cultural exchange, economic remittances and transnational identities.
However, migration also creates tensions within globalisation. The same globalisation that enables the free movement of goods, capital and information has not produced truly free movement of people. States continue to assert sovereignty over their borders, restricting who can enter, work and settle. This tension between the economic logic of free movement and the political logic of border control is at the heart of Topic 8B.
Exam Tip: The Edexcel specification frames migration within the broader context of globalisation. In your answers, always make explicit links between migration and globalisation processes — transport, communications, trade, TNCs, cultural exchange. The highest marks go to students who see migration not as a separate topic but as an integral part of globalisation.
The India–Gulf migration corridor is a textbook illustration of how globalisation manufactures migration. India has the world's largest diaspora — approximately 18 million people abroad — and the Gulf Cooperation Council states host roughly 9 million Indian nationals (the largest concentration outside India).
This corridor demonstrates every theme of EQ1 — globalisation enabling movement (transport, recruitment, demand), self-reinforcing networks, and the persistent assertion of sovereign control over who may settle as opposed to merely work.
Explain how globalisation has accelerated international migration. (12 marks — AO1 + AO2, Levels 1–3)
A strong response would explain at least three mechanisms with named evidence: the transport revolution (cheaper, faster air travel making long-distance moves feasible), communications technology (smartphones and WhatsApp sustaining migrant networks and information flows), economic globalisation (TNCs and integrated labour markets generating demand at both the Gulf-construction and Silicon-Valley ends), migration networks making corridors self-reinforcing (cumulative causation), and deregulation through free-movement zones (EU, ECOWAS). The discriminator for the top level is analysis of relative importance — arguing, for example, that networks and demand matter more than transport alone, since transport is necessary but not sufficient — and at least one synoptic link to globalisation processes.
Edexcel resource questions reward a disciplined four-stage routine — describe → manipulate → explain → evaluate. Consider this net-migration resource for five selected countries (illustrative figures based on UN DESA / national statistics for the 2010s decade):
| Country | Immigrants (000s) | Emigrants (000s) | Population (millions) |
|---|---|---|---|
| Germany | 1,560 | 1,190 | 83.2 |
| UK | 1,180 | 590 | 67.0 |
| Poland | 220 | 480 | 38.0 |
| Mexico | 60 | 510 | 126.0 |
| Saudi Arabia | 1,030 | 90 | 34.8 |
Step 1 — Describe. The data shows a clear contrast between net immigration countries (Germany, UK, Saudi Arabia) and net emigration countries (Poland, Mexico). Saudi Arabia and Germany have the largest immigrant inflows in absolute terms.
Step 2 — Manipulate. Net migration is defined as:
Net migration=Immigrants−Emigrants
So Germany's net migration is 1,560−1,190=+370 thousand; the UK's is 1,180−590=+590 thousand; Poland's is 220−480=−260 thousand; Mexico's is 60−510=−450 thousand; Saudi Arabia's is 1,030−90=+940 thousand. To compare fairly across different population sizes, calculate the net migration rate per 1,000 population:
Net migration rate=PopulationNet migration×1000
For Saudi Arabia this gives 34,800,000940,000×1000≈+27 per 1,000 — far higher than the UK's 67,000,000590,000×1000≈+8.8 per 1,000. The rate therefore reveals that Saudi Arabia is proportionally the most migration-dependent society in the table, a fact the absolute totals partly conceal.
Step 3 — Explain. These patterns follow the logic of globalisation. Saudi Arabia's extreme positive rate reflects a Gulf labour model in which migrants supply almost the entire private-sector workforce. Poland and Mexico's negative balances reflect their position as labour exporters within established corridors (Poland → Western Europe; Mexico → USA), driven by wage differentials.
Step 4 — Evaluate. The resource has limitations: net migration flows say nothing about migrant stock (the accumulated foreign-born population), nor about composition (skilled vs unskilled, permanent vs temporary). Saudi Arabia's high inflow is overwhelmingly temporary contract labour with no path to settlement, whereas Germany's includes permanent settlers — so identical net figures can mean very different things.
Exam Tip: In any data question, always convert raw totals into a rate or percentage to enable fair comparison, then state explicitly what the data cannot tell you. Manipulation plus evaluation of the resource itself is the discriminator examiners reward.
Migration is the connective tissue of the whole specification. Use the Players · Attitudes & Actions · Futures & Uncertainty lenses to make synoptic links explicit:
These links connect this lesson to globalisation (Topic 4 — the shrinking world that enables migration), superpowers (Topic 7 — whose interventions create refugee flows), health and human rights (Topic 8A — the medical brain drain, the right to seek asylum) and diverse places (Topic 6 — how migration reshapes the character of UK cities).
Study the net-migration table above. Analyse the variations in net migration shown by the data. (6 marks — predominantly AO3, with supporting AO1/AO2)
The table shows Germany, the UK and Saudi Arabia have positive net migration while Poland and Mexico have negative net migration. Saudi Arabia has the most immigrants and Mexico the most emigrants relative to immigrants. This is because richer countries attract migrants looking for work and poorer countries lose people who go abroad for jobs.
The data reveals a clear split between net immigration and net emigration countries. Calculating net migration, Saudi Arabia gains +940,000 and the UK +590,000, while Mexico loses 450,000 and Poland 260,000. Converting to a rate per 1,000 population, Saudi Arabia's +27 is far above the UK's +8.8, showing it is proportionally the most migration-dependent. This reflects the Gulf model where migrant labour dominates the workforce, and wage-differential-driven corridors (Mexico → USA, Poland → Western Europe).
The resource displays a steep migration gradient structured by globalisation. Absolute flows mislead unless standardised: the net migration rate populationnet migration×1000 gives Saudi Arabia ≈ +27 per 1,000 against the UK's ≈ +8.8, so Saudi Arabia is proportionally over three times as migration-reliant despite a smaller absolute gain than might first appear relative to Germany. The pattern maps onto Wallerstein's core–periphery logic — periphery exporters (Mexico, Poland) supply labour to higher-wage destinations — and onto the Gulf's temporary-contract model. However, the resource has real limits: it captures flows not stock, and says nothing about composition. Saudi Arabia's inflow is overwhelmingly temporary kafala labour with no settlement, whereas Germany's net figure includes permanent settlers and refugees — so identical net values can conceal fundamentally different migration systems. The data is therefore best read as evidence of globalisation's uneven integration of labour markets.
The Mid-band answer lifts the broad pattern and offers a generic cause; it sits in Level 1 because it neither manipulates the data nor evaluates the resource. The Stronger answer reaches Level 2/low Level 3 by calculating net migration and a standardised rate and linking to corridor theory. The Top-band answer secures Level 3 by manipulating (rate per 1,000), conceptualising (core–periphery, temporary vs permanent systems) and crucially evaluating the resource itself (flow vs stock, composition blind spots) — the discriminators examiners reward in resource questions.
| Misconception | Why it is wrong |
|---|---|
| "Migrant, refugee and asylum seeker mean the same thing." | Each has a precise legal meaning. A migrant moves (often voluntarily); a refugee has crossed a border fleeing persecution and met the 1951 Convention test; an asylum seeker has applied for that status and awaits a decision. Conflating them is the single most common error in this topic. |
| "Globalisation has produced free movement of people." | It has produced near-free movement of goods, capital and information, but the movement of people remains heavily policed. This asymmetry is the central tension of Topic 8B, not an oversight. |
| "Most migration is permanent and long-distance." | Most migration is internal (rural–urban within a country), and much international migration is temporary or circular (seasonal workers, Gulf contracts, students). Permanent intercontinental settlement is a minority of total movement. |
| "Migrants are simply the poorest people from the poorest places." | The very poorest often cannot afford to migrate internationally — migration requires capital, networks and information. Migration frequently rises with development before it falls (the "migration hump"), so emigrants are often the relatively educated and aspirational. |
| "Push factors alone explain migration." | Lee's model requires push and pull and the navigation of intervening obstacles and personal factors. Identical push conditions produce very different migration outcomes depending on networks, cost and policy. |
| Term | Definition |
|---|---|
| Migration | The movement of people from one place to another with the intention of settling temporarily or permanently |
| Push factor | A negative condition in the origin that encourages out-migration |
| Pull factor | A positive condition in the destination that attracts in-migration |
| Migration corridor | An established route between an origin and destination country, sustained by economic, social and historical ties |
| Diaspora | A community of people living outside their country of origin who maintain connections to their homeland |
| Remittances | Money sent by migrants back to their families in the country of origin |
| Irregular migration | Migration without legal authorisation (entry or overstay) |
| Survival migration | Migration driven by existential threats that do not fit the legal definition of a refugee |
| Net migration | The difference between immigration (in-migration) and emigration (out-migration) |
| Intervening obstacle | A barrier that makes migration more difficult or costly |
| Migration hump | The tendency for emigration to rise as a poor country develops, before falling at higher income levels |
International migration is a defining feature of the 21st century, driven by the same globalisation processes that have integrated economies, communications and transport networks. Understanding migration requires grasping its multiple dimensions — voluntary vs forced, internal vs international, temporary vs permanent, regular vs irregular — and applying theoretical frameworks such as Lee's push-pull model, Ravenstein's laws and Wallerstein's world-systems theory. With over 281 million international migrants and 110 million forcibly displaced people, migration is one of the most significant and contested issues in global politics. Crucially, globalisation has not delivered free movement of people: the gap between near-frictionless capital flows and tightly policed human movement is the tension that runs through every later lesson on sovereignty, identity and belonging.
This content is aligned with the Edexcel A-Level Geography (9GE0) specification.