IB Economics SLTopic 4 — The Global EconomyPaper 1 & 2Core idea~9 min read
Preferential Trade Agreements and the WTO
Economic integration is what happens when countries lower barriers with each other and become more dependent on each other as a result. It starts with agreements between a handful of governments and can end with a shared currency. This page covers the first step, and the organisation that is supposed to keep the whole system honest.
📘 What you need to know
Economic integration is the process of countries reducing trade barriers between themselves and becoming more interdependent.
It deepens in stages: trade agreements, then trading blocs, then in some cases a monetary union.
A preferential trade agreement (PTA) gives members better terms than non-members. Bilateral, regional and multilateral deals are all types of PTA.
Bilateral means two countries; regional means several in the same area; multilateral means many countries or blocs, and is legally binding.
The World Trade Organisation was set up in 1995 to promote free trade, on the view that it raises living standards and creates jobs.
Trade liberalisation means rolling back barriers, such as cutting tariffs.
The WTO has two main jobs: hosting negotiations between members, and settling disputes when one member believes another has broken an agreement.
Its rulings are not enforced by fines. The remedy is permission for the winning country to retaliate, which works better for large economies than small ones.
The four kinds of trade agreement
The names sound more different than they are. They all do the same thing — give members better access to each other’s markets than outsiders get — and the only real difference is how many countries are in the room.
Bilateral deals are quick to sign and narrow in effect. Multilateral deals are slow and hard, but they cover far more of world trade when they succeed.
WORKED EXAMPLE
Distinguish between a bilateral and a multilateral trade agreement. [4]
Step 1: define both, precisely
A bilateral agreement is between two countries and aims to reduce or remove barriers between them. A multilateral agreement is a legally binding deal between many countries or blocs, usually negotiated through the WTO.
Step 2: give the point of difference, not two separate definitions
The difference is scope and enforcement: bilateral deals bind two governments, while multilateral deals set rules that apply across many members at once.
Step 3: one consequence
Because more members must agree, multilateral deals take far longer to conclude, which is why many countries sign bilateral deals instead.
Two definitions plus the difference itself“Distinguish” means the contrast must be stated. Two definitions side by side with no comparison drops a mark.
What the WTO does
The WTO started in 1995 with a simple belief: freer trade raises living standards, creates jobs and makes goods cheaper. It works towards that in two ways — getting members around a table to cut barriers, and judging the arguments when they break out.
What it aims for
What it actually does
Improving living standards
Hosts trade negotiations between members
Fair competition between members
Monitors whether agreements are being kept
Predictable rules for traders
Settles disputes between member governments
Protecting the environment
Builds trading capacity in poorer members
Bringing more countries into trade
Works with governments and other organisations
How a dispute actually works
This is the part students describe vaguely and examiners reward for precision. Nobody is fined. The system runs on permission to retaliate, which is a much weaker instrument than it sounds.
That last line is the heart of the evaluation. The remedy is only as strong as the market power of the country holding it.
Say it precisely in an essay: WTO rulings are not directly enforceable, so compliance is voluntary in practice, backed by the threat of authorised retaliation. That sentence alone separates a strong answer from a vague one.
Why the WTO’s influence has weakened
Four pressures come up again and again, and any of them will earn evaluation marks.
Pressure
What is happening
Why it matters
Unequal bargaining power
Large economies negotiate from strength
Poorer members struggle to win better terms
Hard sectors
Agriculture and services resist agreement
Rich countries subsidise farmers; services stay closed
Weak enforcement
The appeals stage has been blocked for years
Rulings can be appealed into limbo
Regional deals everywhere
Hundreds of regional agreements now exist
They liberalise between members and discriminate against everyone else
That last row is the awkward one. A regional agreement is a step towards free trade for its members and a step away from it for everybody outside, because members keep or raise barriers against non-members. An organisation set up to liberalise trade globally now watches most new liberalisation happen in clubs it does not run.
WORKED EXAMPLE
Plan: “Evaluate the effectiveness of the WTO in promoting free trade.” [15]
1 Set-up
Define the WTO and trade liberalisation. State the two roles: negotiation and dispute settlement.
2 The case that it works
Tariffs on manufactured goods are far lower than they were before it existed; there is a shared rulebook; disputes are argued rather than fought with escalating tariffs; smaller members get a forum they would not otherwise have.
3 The case that it does not
Rulings rely on retaliation, which favours large economies; the global round of talks has stalled for years; agriculture and services remain heavily protected; regional agreements are doing the work instead.
4 Evidence
Name a dispute or a stalled negotiation and say what it showed.
5 Judgement with a reason
“The WTO has been more effective as a rulebook than as a referee. It has kept a shared set of rules in place, but because enforcement depends on the injured country’s market power, it protects large members far more reliably than small ones.”
Split the verdict by functionJudging the two roles separately is a neat trick for any question about an institution. It gives a balanced answer that still takes a position.
💡 Exam tip
Give the year. The WTO was established in 1995, and small precise facts read as knowledge.
Say “not directly enforceable” rather than “not legally binding”. It is more accurate and sounds like you know the mechanism.
Use the size argument. Retaliation works for a large market and barely works for a small one.
Link regional deals back to the WTO. They liberalise and discriminate at the same time, which is genuinely awkward.
Do not confuse the WTO with the IMF or World Bank. Different jobs, different questions.
Keep one dispute in mind as an example, and know what the outcome was.
⚠️ Common mix-up
Thinking the WTO fines countries. It authorises retaliation; it does not collect penalties.
Treating “preferential” as a separate type from bilateral and regional. It is the family they all belong to.
Saying the WTO makes trade rules by itself. Members negotiate the rules; the WTO hosts and administers them.
Assuming free trade agreements and the WTO always pull the same way. Often they do not.
Confusing trade liberalisation with deregulation generally. This is specifically about barriers to trade.
Listing the functions with no evaluation in a 15-mark answer. Knowing what it does is the easy half.
Up next: Trading Blocs and How They Differ — free trade areas, customs unions and common markets, and the trade creation and trade diversion that come with them.
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