Final answer:
The Declaration of Independence justified independence from Britain and emphasized fundamental rights, while the Preamble to the Constitution aimed to form a more perfect union and establish justice.
Explanation:
American Declaration of Independence and Constitutional Purposes
The Declaration of Independence served to justify the United States' independence from Britain by highlighting rights like life, liberty, and the pursuit of happiness as essential. It also emphasized that it is the right of the people to alter or abolish a government that infringes upon these rights, as stated by Jefferson.
The Preamble to the Constitution aims to form a more perfect union by uniting the colonies and establish justice by defining and safeguarding the rule of law, reflecting the principles essential for a just government.
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