The main point of the keyword phrase "September 11th in history" is a noun. The core element, "September 11th," functions as a proper noun, as it names a specific day or a collection of events associated with that day.
In a grammatical analysis, "September 11th" is the noun phrase that serves as the subject or topic. The phrase "in history" is a prepositional phrase acting as an adjectival modifier, specifying the context in which the noun is being examined. It answers the question "Which September 11th?" or "In what context are we considering September 11th?". Therefore, the central focus is the noun itself, not an action (verb) or a descriptive quality (adjective).
This determination is critical because it establishes that the article's subject is an entitya specific date and its associated events. The article should be structured to describe, define, and analyze this topic. By treating "September 11th" as a noun, the content will focus on the what, who, and why of historical occurrences on that date, providing a focused, descriptive, and analytical narrative.
