Final answer:
The Preamble of the U.S. Constitution explains the goals and purposes of the Constitution.
Step-by-step explanation:
The portion of the U.S. Constitution mentioned in the question is the Preamble. It is intended to explain the goals and purposes of the Constitution. The Preamble highlights the objectives of forming a more perfect union, establishing justice, ensuring domestic tranquility, providing for the common defense, promoting the general welfare, and securing the blessings of liberty for the current generation and future generations. It sets the overall tone and purpose of the Constitution.
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