Answer:
The english document that laid the groundwork for judges in the us to rule based on precedent is known as the "Commentaries on the Laws of England"
Explanation:
Written in 1765 by Sir William Blackstone, this document was considered by United States courts as the pre-Revolutionary source of common law, since it played a major role in the development of English law and later on it also stated the fundamental keys to the improvement of the American legal system.
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