IB Geography • HL4.3
Human & Physical Influences
The shrinking world—and the transport, digital, political and environmental forces that still make distance matter.
How political, technological and physical processes influence global interactions
The shrinking world
Time-space convergence reduces the time, cost and effort required to connect places.
The planet is not physically smaller. Transport moves people and goods faster, while digital networks move information almost instantly. Yet the shrinking world remains uneven because infrastructure, income, politics and geography still create friction.
Starter — See the shrinking world
Identify innovations that accelerate people, goods, capital, data or ideas. Define time-space convergence with one example, then identify a place or group still experiencing high friction of distance.
Container shipping and commercial aviation
Aviation offers speed; container shipping offers huge capacity and low unit costs.
Enquiry 1 — Air versus sea
Compare speed, capacity, cost, suitable cargo and environmental impact. Use a live shipping map to identify one hub and chokepoint, then model how a disruption would spread through a just-in-time supply chain.
Communications technology
The digital world feels wireless, but relies on cables, landing stations, data centres, satellites and mobile networks.
Enquiry 2 — Follow one piece of data
Sketch a route for a message from Bangkok to London. Use the submarine-cable map to identify likely routes and landing points, then evaluate whether digital technology eliminates distance or changes the type of distance that matters.
Opening and closing global flows
Governments and multi-governmental organisations actively reshape trade, investment and migration.
Trade blocs and special economic zones can reduce barriers and attract investment; migration controls, sanctions, protectionism and border policy can slow or redirect flows. The EU and ASEAN demonstrate how cooperation expands effective market scale while retaining uneven national interests.
Enquiry 3 — Political gatekeepers
Classify policies as accelerating, slowing or redirecting flows, then dual-code them by people, goods, capital or information. Evaluate whether governments have lost control over globalisation. [12]
Where distance still bites
Isolation, landlockedness, relief, climate and resource availability continue to shape connectivity and power.
St Helena
A remote South Atlantic island shows how aviation infrastructure can transform accessibility while high costs and small markets continue to constrain interaction.
Bolivia
Dependence on neighbours for port access demonstrates how physical position and political relations combine to create friction.
Enquiry 4 — When the world refuses to shrink
Compare St Helena and Bolivia with a resource-rich state such as the UAE or a landlocked low-income state such as Niger. Separate physical constraints from political and infrastructural choices, then assess which matter most.
HL synthesis
Use transport, communications, politics and physical geography to answer: “Technological change has made geographical distance irrelevant.” Discuss. [12]