Contract law comes from case law, the Uniform Commercial Code and the United Nations Convention for the International Sale of Goods.

Uniform Commercial Code

A standardized set of laws and regulations that govern commercial transactions in the United States.

United Nations Convention

An international treaty or agreement formulated under the auspices of the United Nations, aimed at regulating issues of global concern.

Case Law

The collection of legal interpretations made by judges. They are considered to be law unless otherwise revoked by a statutory law. Also known as common law.