Here's why:
* Gender-neutral: The word "citizen" is used to describe any person who is a member of a particular state or nation, regardless of their gender.
* No specific gender: Unlike words like "king" or "queen," which are inherently masculine or feminine, "citizen" has no inherent gender assigned to it.
You can use "citizen" to refer to a man, a woman, or a person whose gender identity is not specified.