Why does the declaration of independence list grievances against king george iii?

The content and interpretation of the Declaration have been the subject of much academic research. For example, the document justified the independence of the United States by listing the colonial claims against King George III and affirmed certain natural and legal rights, including the right to revolution. After fulfilling its original mission of announcing independence, references to the text of the Declaration were scarce in the following years.

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explanation:

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.