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HL global interactions · Networks, development and global risks

International Baccalaureate · IB Diploma · Geography · HL · Topic 4

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6:09

Global interactions

In March 2021 the container ship Ever Given got stuck across the Suez Canal for six days. Hundreds of ships waited at both ends, and factories in Europe ran…

English narration · English + 中文 subtitles burned in

4.1

Global interactions

IB Diploma Programme Geography HL (first assessment 2019; 2017 guide). This topic covers the HL extension 高级程度拓展部分, Geographic perspectives — global interactions. It has three units: power, places and networks; human development and diversity; and global risks and resilience. Paper 3 (HL only, 1 hour) asks one question from a choice of three, one per unit. Each question has a part (a) worth 12 marks and an essay part (b) worth 16 marks. Good answers use examples at more than one scale and show how places are connected.

In March 2021 the container ship Ever Given got stuck across the Suez Canal for six days. Hundreds of ships waited at both ends, and factories in Europe ran short of parts made in Asia. One ship in one canal showed how closely the world's places are linked, and how a problem in one place can spread everywhere. That is the idea behind this whole topic.

Must-know for this topic:

Unit Key content
power, places and networks global flows; superpowers and groups such as the G20; TNCs; core and periphery
human development and diversity HDI and poverty; cultural diffusion and glocalisation; local resistance
global risks and resilience pandemics, financial crises, chokepoints, pollution; resilience and cooperation
Vocabulary Train
English
HL extension
4.2

Power, places and networks

Global flows

Globalisation 全球化 is the growing connection between places through four kinds of flow 流动:

Flow Example Size
goods and services phones from China, software from India exports are about 30% of world GDP
money foreign direct investment 外国直接投资 (FDI), aid, remittances remittances 侨汇 to low- and middle-income countries were about US$650 billion in 2023
people migrants, students, tourists about 280 million international migrants (UN, 2020)
information the internet, films, social media about two thirds of people use the internet

A global network 全球网络 has nodes 节点 (cities and ports) and links 连接 (shipping lanes, flight routes, undersea cables). A place with many links, such as Shanghai, Singapore or London, gains more trade, more investment and more power. A poorly connected place, such as a landlocked country with weak roads, finds it hard to join in.

Global power

A superpower 超级大国 has economic, military, political and cultural power that reaches the whole world; today the United States and China are usually named. Countries also act in groups. The G20 二十国集团 produces about 85% of world GDP and 75% of world trade. International organisations set rules for everyone: the United Nations (193 member states), the International Monetary Fund, the World Bank and the World Trade Organization.

Transnational corporations 跨国公司 (TNCs) operate in many countries. They usually keep research, design and headquarters in rich countries and place factories where costs are lower; this is outsourcing 外包 or offshoring 离岸外包. More of the money is made in design, branding and selling than in growing or making the product, so the core 核心地区 gains more than the periphery 边缘地区.

A chocolate commodity chain from cacao farm to processor, manufacturer and retailer, with the value rising at each stage

A global commodity chain: most value is added far from where the raw material is grown

Worked example. In the illustration, a bar of chocolate sells for $2.00 and the cacao farmer receives$0.06. The farmer's share is

$$\frac{0.06}{2.00} \times 100 = 3\%$$

The other 97% is added by processing, manufacturing, branding and selling, mostly in core countries.

Power does not only flow one way. Chinese, Indian and Brazilian companies now invest abroad, and governments can tax and regulate TNCs or refuse them entry.

Vocabulary Train
English
globalisation/ˌɡləʊbəlaɪˈzeɪʃn/
flow/fləʊ/
foreign direct investment/ˈfɒrən daɪˈrekt ɪnˈvestmənt/
remittance
global network/ˈɡləʊbl ˈnetwɜːk/
node/nəʊd/
link/lɪŋk/
superpower
G20
transnational corporation/trænˈsnæʃənl ˌkɔːpəˈreɪʃn/
outsourcing/aʊtˈsɔːsɪŋ/
offshoring/ˈɒfʃərɪŋ/
core/kɔː/
periphery/pəˈrɪfəri/
4.3

Human development and diversity

Measuring development

The Human Development Index 人类发展指数 (HDI) combines three dimensions: health, education and income. Each is scored from 0 to 1, and the HDI is a kind of average of the three. In 2022, Switzerland scored 0.967, China 0.788 and Somalia 0.380 (UNDP).

Three boxes for health, education and income combine into the HDI from 0 to 1

The HDI combines health, education and income into one index from 0 to 1

The Gender Inequality Index 性别不平等指数 (GII) measures gaps between women and men in health, education, work and politics. About 700 million people still live in extreme poverty 极端贫困, on less than $2.15 a day (World Bank). Development is more than income: it is the freedom and ability to live the life you value.

Changing identities and cultures

Global flows carry culture as well as goods. Cultural diffusion 文化扩散 spreads foods, music, brands and languages. Some people fear cultural homogenisation 文化同质化: every city with the same shops and films. But global brands often change to fit local tastes: glocalisation 全球本土化. KFC in China sells rice porridge (congee) and fried dough sticks (youtiao) for breakfast, and Shanghai Disneyland (2016) added Chinese designs and festivals. Cultures also mix to create new hybrid 混合 forms, such as K-pop, which mixes Korean and American music styles.

Local responses

Not everyone welcomes global interactions 全球互动. Responses include:

  • Protectionism 贸易保护主义: tariffs and quotas to protect local jobs.
  • Fairtrade 公平贸易: a guaranteed minimum price for about 2 million farmers and workers.
  • Civil society 公民社会 campaigns, such as protests against factory working conditions.
  • Indigenous groups protecting their land, language and knowledge.
Vocabulary Train
English
Human Development Index/ˈhjuːmən dɪˈveləpmənt ˈɪndeks/
Gender Inequality Index/ˈdʒendə ɪniːˈkwɒlɪti ˈɪndeks/
extreme poverty
cultural diffusion
cultural homogenisation
glocalisation/ˌɡləʊkəlaɪˈzeɪʃn/
hybrid
protectionism/prəˈtekʃənɪzəm/
Fairtrade
civil society
global interaction/ˈɡləʊbl ˌɪntəˈrækʃn/
4.4

Global risks and resilience

Risks that cross borders

Because places are linked, problems spread quickly. Global risks 全球风险 include:

Risk Example
pandemic COVID-19 cut world GDP by about 3% in 2020 (IMF)
financial crisis the 2008 crisis began in the United States housing market and spread to banks everywhere
supply-chain chokepoint 咽喉要道 the 2021 Suez Canal blockage
transboundary pollution 跨境污染 smoke from forest fires in Indonesia in 2015 covered Singapore and Malaysia
loss of sovereignty 主权 global rules or companies limit what a government can decide
The shipping route from East Asia to northern Europe through the Suez Canal, and the longer route round southern Africa

A chokepoint: when one link in the network fails, every connected place feels it

Building resilience

Resilience 恢复力 is the ability to absorb a shock and recover. It works at every scale:

Scale Strategy Example
global international agreements the Montreal Protocol 蒙特利尔议定书 (1987) banned the gases that damage the ozone layer; it is now slowly recovering
national stockpiles, more than one supplier car makers buying chips from several countries after 2021
local early warnings, insurance, savings text-message warnings before floods

New technology can reduce risk (early-warning satellites, vaccines developed in under a year), but it also creates new risks, such as cyber attacks on banks and power grids.

Vocabulary Train
English
global risk/ˈɡləʊbl rɪsk/
chokepoint
transboundary pollution
sovereignty/ˈsɒvərɪnti/
resilience/rɪˈsɪlɪəns/
Montreal Protocol/ˌmɒntrɪˈɔːl ˈprəʊtəkɒl/
4.5

Answering Paper 3

Part (a), 12 marks. Usually "explain" or "examine" a link. Make two or three developed points, each with a named example and a number.

Part (b), 16 marks. An essay: "Discuss", "Evaluate" or "To what extent". Give both sides, use examples at different scales, and end with a clear judgement.

Worked plan. "To what extent are global interactions good for developing countries?"

  1. For: FDI brings jobs and skills; remittances are about US$650 billion a year to low- and middle-income countries.
  2. Against: the periphery receives little of the value (the farmer's 3% share); dependence on one export or one buyer.
  3. Scale: national GDP may rise while some local places lose out.
  4. Risk: COVID-19 showed that connected economies also share shocks.
  5. Judgement: global interactions help most when governments invest in skills and spread links across many partners.
4.6

Checklist

  • The four flows with numbers; nodes and links; why connected places gain power.
  • Superpowers, the G20, the UN, IMF, World Bank and WTO; TNCs and outsourcing; core and periphery; the 3% commodity-chain calculation.
  • HDI (Switzerland 0.967, China 0.788, Somalia 0.380) and GII; extreme poverty.
  • Cultural diffusion, homogenisation, glocalisation (KFC in China) and hybrid cultures; local responses including Fairtrade.
  • The five risks with examples; chokepoints (Suez 2021); resilience at global, national and local scales (Montreal Protocol).
  • Paper 3: part (a) 12 marks, part (b) 16 marks; examples at more than one scale and a clear judgement.
Additional notes PDF
Supported preparation: HL networks, power and risks

Scope and prerequisites

IB geography first assessment 2019. School chooses two of seven options at SL and three at HL: freshwater, oceans/coasts, extreme environments, hazards, leisure/tourism/sport, food/health, urban environments. Introductory lessons do not claim to teach every option.

Mapped preparation outcomes: ib_geography_hl.4.1, ib_geography_hl.4.2. Read the matching native lesson first. Actual approved choices, evidence and final learner work remain separate.

Source vocabulary

global interaction 全球互动; dependency 依赖性.

Explanation and worked method

A network diagram should trace flows and locate dependencies, not merely show connected dots. A powerful node may control access or value; connectedness does not ensure equal benefit. Compare local and global effects on specified stakeholders.

Original classroom evidence panel for HL networks, power and risks

Task: two suppliers use one port; one has reserves and an alternative route, the other has one buyer and no reserve. Evaluate a closure.

Both face disruption, but alternatives and buffers can make duration and costs unequal. Map goods, payments and decisions, then compare short-term income, employment and longer-term bargaining. Do not treat the same connection as equal resilience.

Independent transfer

Rerouting protects a large buyer but raises costs for suppliers and emissions. Evaluate at two scales.

Attempt independently before reading the model.

Checked original model

At firm scale, rerouting can protect production and employment. At supplier and wider environmental scales, costs and emissions may rise unequally. Compare alternatives, duration, bargaining power and buffers, then justify which trade-offs matter under the stated conditions.

These are authored formative expectations, not official IB descriptors. Accept other justified arguments with evidence and material limits.

Source and task holds

This supplement teaches the method for this part of the course. The full assessment criteria and any texts your school chooses come from your teacher.

Interactive lessons on this topic

Work through it step by step, with instant-check exercises.

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