World History
That all appointments made by the President and an treaties signed by him must be ratified by the Senate in U.S.A. indicates

Theory of checks and balances
Rule of law
Due process of law
Theory of separation of powers

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World History
What is Chivalry?

The code Charlemagne implemented
The code by which a Christian family lived
The code by which young men lived
The code by which knights lived

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