a currency is a system of money created and used by\nan individual or a group of people.\nall people who…

a currency is a system of money created and used by\nan individual or a group of people.\nall people who live in the same era.\na nation or region of the world.\na town, city, or state within a region.
Answer
Brief Explanations:
A currency is a standardized form of money used within a defined economic - area. Typically, it is issued and regulated by a nation or a region (such as the Euro used in the Euro - zone). It is not created and used by an individual or a small group, nor by all people of the same era globally, and not just by a town, city, or state within a region (though local currencies can exist but are not the standard definition).
Answer:
a nation or region of the world.