Superpowers and the Global Economy

This lesson examines how superpowers exert power through economic mechanisms — trade dominance, financial system control, reserve currencies, sanctions, trade wars and technological supremacy. You will analyse how economic power reinforces geopolitical influence and how the global economic order is being contested. This lesson addresses the Edexcel Enquiry Question: "What mechanisms are used to maintain superpower influence?"

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Trade Dominance

Control of global trade is a fundamental mechanism of superpower power. The world's largest traders shape the rules of the global economy and create dependencies that translate into geopolitical leverage.

The World's Largest Traders (2023)

Rank	Country	Exports ($ billion)	Imports ($ billion)	Total Trade ($ billion)
1	China	3,380	2,556	5,936
2	USA	2,018	3,173	5,191
3	Germany	1,694	1,486	3,180
4	Netherlands	943	839	1,782
5	Japan	717	784	1,501

China has been the world's largest exporter since 2009, overtaking Germany. It is the largest trading partner of over 120 countries, creating extensive economic dependencies. The USA remains the world's largest importer, and access to the American consumer market (worth approximately $5 trillion annually in retail sales) gives the US enormous leverage.

Trade and Dependency

When a country depends heavily on a single superpower for trade, it creates a power asymmetry:

• Australia-China trade dependency: China purchases approximately 39% of Australia's exports (mainly iron ore, coal and natural gas). When Australia called for an independent investigation into the origins of COVID-19 in 2020, China imposed trade restrictions on Australian wine, barley, beef, coal and lobster — costing Australian exporters approximately $20 billion. This demonstrated how trade dependency can be weaponised.
• EU-Russia energy dependency: The EU's dependence on Russian gas (40% of supply pre-2022) gave Russia significant leverage, which it exploited during the Ukraine crisis.
• Central American dependency on the USA: Countries like Honduras, Guatemala and El Salvador send 30–50% of their exports to the US and receive billions in remittances from diaspora communities, making them highly vulnerable to US policy changes.

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The Dollar as a Weapon: Reserve Currency Power

The US dollar is the world's primary reserve currency — the currency that central banks hold for international transactions and foreign exchange reserves. This gives the USA an extraordinary and unique form of power, sometimes called "exorbitant privilege".

Dollar Dominance in Numbers

Metric	Dollar Share (%)
Global foreign exchange reserves	~59
International debt denominated in USD	~50
Global trade invoiced in USD	~40
SWIFT financial messaging transactions	~42
Foreign exchange market turnover	~88 (one side of all trades)

Why Dollar Dominance Matters

1. The USA can borrow cheaply: Because the world wants dollars, the US government can run large budget deficits and national debt ($34+ trillion) at lower interest rates than other countries.
2. Sanctions power: The USA can cut countries, companies and individuals off from the dollar-based financial system. Because most international transactions go through US-based correspondent banks, being cut off from the dollar is economically devastating.
3. Seigniorage: The USA earns revenue simply from producing the currency the world needs — printed paper (or digital entries) exchanged for real goods and services.
4. Financial intelligence: Because dollar transactions flow through US banks, the US government has visibility into global financial flows.

De-dollarisation Efforts

The weaponisation of the dollar has prompted efforts to reduce dependence on it:

• China: Has promoted the renminbi (RMB) for international trade. The RMB is now the 4th most-used currency in SWIFT payments (approximately 4.7%) and has been included in the IMF's Special Drawing Rights basket since 2016. China has also signed bilateral currency swap agreements with over 40 countries.
• BRICS: Members have discussed creating a common currency or expanding trade in local currencies. Russia and China now settle the majority of their bilateral trade in roubles and renminbi rather than dollars.
• Digital currencies: China's digital yuan (e-CNY) is the world's most advanced central bank digital currency, potentially offering an alternative payment infrastructure.

However, de-dollarisation remains slow and limited. The dollar's dominance is underpinned by the depth, liquidity and openness of US financial markets, the rule of law in the US legal system, and the absence of a credible alternative. The renminbi is not freely convertible, and Chinese capital controls limit its usefulness as a reserve currency.

Exam Tip: Dollar dominance is a concept that many students overlook but is crucial for understanding American economic power. The ability to impose financial sanctions — effectively excluding a country from the global financial system — is one of the most powerful weapons in the US arsenal, and it does not require a single soldier or ship.

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Economic Sanctions as a Mechanism of Power

Sanctions are coercive economic measures imposed by states or IGOs to change the behaviour of a target country, organisation or individual.

Types of Sanctions