How would the law be different if we didn’t have multiple sources

In civil law systems, the sources of law include the legal codes, such as the civil code or the criminal code, and custom; in common law systems there are also several sources that combine to form “the law”. Civil law systems often absorb ideas from the common law and vice-versa.

Explanation:

the fifth and fourteenth amendments to the united states constitution each contain a due process clause. due process deals with the administration of justice and thus the due process clause acts as a safeguard from arbitrary denial of life, liberty, or property by the government outside the sanction of law.

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the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.