Final answer:
The First Amendment prohibits the mandatory prayer in public schools, and sectionalism refers to regional allegiance over national unity.
Explanation:
The public school having a mandatory prayer every day before lunch violates the First Amendment of the United States Constitution.
The First Amendment protects the freedom of religion, stating that the government cannot establish or promote a specific religion. This prohibition includes mandating prayers in public schools, as seen in the case of Engel v. Vitale (1962).
Sectionalism is the idea of devotion and allegiance to the interests of a specific region over that of the entire nation. This concept emphasizes regional loyalty above national unity, which can lead to division and conflict within the country.
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