What does the phrase it happen mean and what is its origin?

"It happened" is a simple phrase meaning that something occurred or took place. It's a very common and basic way to describe an event, without giving any specific details about what actually happened.

Origin:

The phrase has a very simple origin, stemming from the basic structure of English grammar.

* "It" is a pronoun used as a placeholder for the subject of the sentence.

* "Happened" is the past tense of the verb "to happen," which means to occur or take place.

Therefore, "it happened" is simply a concise way to say that something occurred, without needing to specify what that something was.

Example:

* "What happened?"

* "It happened."

This phrase is so common and basic that it doesn't really have a specific historical origin or interesting etymology. It's simply a natural and intuitive way to describe an event in English.