Free Trade, Comparative Advantage & Protectionism

Most modern economies operate somewhere between complete free trade and complete protectionism. They typically:

• Have low or zero tariffs on most goods, especially within trade blocs.
• Protect a small number of politically sensitive sectors (agriculture, steel, defence-related industries).
• Use quality and safety standards that act as soft trade barriers.
• Negotiate bilateral agreements that liberalise trade with specific partners.
• Reserve the right to retaliate if other countries impose barriers.

The historical trend over the past 75 years has been steadily toward freer trade, with occasional reversals during recessions, trade wars and pandemics. The 2018–2020 US-China trade war and the 2020 Covid disruptions both pushed many countries toward more protectionism in selected sectors, but the underlying long-run trend has been outward.