I Have A Garmin Gps In The Usa If I Bring It To Europe Will It Work There

You will need to go to the Garmin company site and download the maps/waypoint/information for the area of the world you are going to (this is a service authored by Jeppesen but sold for Garmin series GPSs, just like updating your IFR or VFR data base on any Garmin you fly here).