Examlex
The Liao Empire was ruled by
Absolute Advantage
The ability of a country or entity to produce a good more efficiently (using fewer resources) than another country or entity.
Specializing
The process of focusing on and becoming expert in a particular subject or skill.
Trading
The action of buying, selling, or exchanging goods and services between people or organizations.
Specialized
Having a focus or expertise in a specific area of activity, knowledge, or production, often leading to increased efficiency.
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