WHY DOES FIREFOX SUDDENYL THINK MY ,LOCATION IS ITALY ? IT IS USA

How exactly does it think this? What do these check show for your location: https://ipinfo.io/what-is-my-ip https://iplocation.io/ ?

Isn't that just one specific service that is mistaken?

when I go to the site you suggested it indicates my location as somewhere in Italy...I was there last week, but have now returned to USA, and cannot find a way to "tell" Firefox that I am no longer there.

And you aren't using e.g. a VPN service? In that case the above comes from your internet service provider so you might need to liaise with them.

(If you ARE using some VPN service, it's plausible it just got stuck in your Italy regional setting when you were there, and you need to re–set it for whatever is your current preference in its settings.)

I will try both suggested solutions. best and thanks....