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LESSON 1 · Why Countries Trade

Modern Trade Reality

Today's trade involves far more than finished goods crossing borders. Trade in services — consulting, software, finance — now makes up a large and growing share of international commerce.

Global value chains mean a single product may cross dozens of borders during production. An iPhone contains components from over 40 countries. This interconnection makes trade relationships far more complex and interdependent than Ricardo could have imagined two centuries ago.