Comparative Advantage

The textbook two-good case. Brazil is absolutely better at both; Kenya still gains from specialising.

Both countries have the same total productive capacity, but different relative strengths.

One country has ten times the labour force. Comparative advantage still bites.

Ricardo with three goods. Each country should still pick one (or two).

Two countries, four goods. The search space is wider; the principle is the same.

What happens when one country is wildly more productive at one specific good?