Unsure about the tense of “My passport was stamped by a man”

Question

I have an uncertainty with this sentence:

My passport was stamped by a man etc.

Would "Was stamped" be a present perfect or a past simple tense? Or something else?

Answer 1

My passport was stamped by a man

This is an example of the simple past passive voice. To change it into the active voice, the subject (a man) becomes the agent

A man stamped my passport

This is a sentence in the simple past. In this context, to stamp something is to use a rubber stamp that can either have a specific date or words carved or molded on the underside. The small instrument is used for printing on documents