International trade and global value chains

Your smartphone was designed in the United States; its electronic components were manufactured in Taiwan and South Korea; it was then assembled in China and shipped to a regional distribution hub before reaching your hands. That journey captures the reality of modern trade: a global interconnection that is reshaping economies, societies, and geopolitics in ways most people never see.

Since the 1990s, international trade has expanded at a pace without historical precedent. World merchandise exports have grown roughly fortyfold over 75 years, rising from about $60 billion in 1950 to more than $24 trillion in 2024 (WTO, 2025). That growth did not happen by accident: it was built on specialization, comparative advantage, and a deliberate dismantling of barriers that once kept national economies largely self-contained.

But the model is under strain. Geopolitical rivalry between major powers, a pandemic that exposed the fragility of over-optimized supply chains, mounting pressure for greener and more local production, and a broad resurgence of protectionism are all forcing a rethink of how global trade is organized. The question is no longer simply “where can we produce most cheaply?” but “where can we produce safely, reliably, and in alignment with our strategic interests?”

Understanding these shifts is no longer optional. Whether you are a consumer, an employee, an entrepreneur, or an investor, the decisions being made today by governments and corporations about supply chains, tariffs, and reshoring will affect the prices you pay, the jobs available to you, and the stability of the economy around you. This Fundamental gives you the tools to decode what is happening, and what comes next.

1. The Basics: What Is Modern International Trade?

Globalization: far more than exchanging finished goods

For most of history, international trade meant exchanging finished products between nations: one country exported wine, another exported cloth, a third exported silk. Each country manufactured its goods from start to finish on home soil and sold the output abroad.

The wave of globalization that accelerated in the 1990s shattered that logic entirely. Today, international trade is primarily about components, services, and intermediate production stages, not finished goods. A product labeled “Made in China” typically contains Japanese, Korean, and Taiwanese parts, designed by an American or European company. The label tells you almost nothing about where the value was actually created.

Three forces drove this transformation:

• The collapse of transport costs: Containerization (the shift to standardized steel boxes) cut maritime shipping costs by a factor of ten since the 1960s. Shipping a 40-foot container from Shanghai to Rotterdam typically costs between $1,500 and $5,000 depending on market cycles (Drewry World Container Index), or roughly one cent per kilogram in normal conditions.
• The telecommunications revolution: The internet and digital tools allow companies to coordinate complex operations across continents in real time. A design team in California can collaborate instantly with engineers in India and factories in China.
• Trade liberalization: Successive trade agreements progressively lowered tariff barriers. The average applied global tariff fell from around 15–20% in the 1980s to roughly 7% today (World Bank WITS; WTO), dramatically reducing the cost of crossing borders.

Global value chains: the new geography of production

The central concept for understanding modern trade is the global value chain (GVC): the full sequence of activities required to bring a product to market, fragmented and distributed across multiple countries according to each one’s competitive strengths.

Take the smartphone as an example. Creating one involves:

1. Design and conception: Carried out primarily in the United States (Apple, Google) or South Korea (Samsung), where technological expertise and innovation capacity are concentrated. This stage accounts for roughly $40 of the total cost and generates 5% of value added.
2. Electronic components: Semiconductors fabricated in Taiwan (TSMC), displays made in South Korea (Samsung, LG), camera sensors produced in Japan (Sony). These high-technology components represent about $180 of the cost and 22% of value added.
3. Final assembly: Performed in China, Vietnam, or India, where skilled labor is abundant and cost-competitive. Despite being the most visible stage, assembly accounts for only $35 of the cost and 4% of value added.
4. Global logistics: Maritime and air freight that moves components to assembly plants, then finished products to markets. Cost: $25, value added: 3%.
5. Regional distribution: Products reach local retail points through distribution hubs. This stage accounts for $40 and 5% of value added.

Value added is not distributed evenly. Countries that control design, innovation, and distribution capture the majority of the value. Countries that handle final assembly capture a small fraction, even though their name appears on the label.

When an iPhone assembled in China is exported to the United States, trade statistics record a Chinese export of $300. In reality, China captures only about $10 of value added, the assembly work. The remaining $290 flows to suppliers of components in other countries and to the American parent company, which captures the bulk of the profit. This is why trade balances, as conventionally measured, can be deeply misleading.