To achieve above you must add  component Restrictions in the google_map_submit.js file   as displayed in  below screenshots:

  1.  This change will affect the *Address  field in listing location when adding a property from front end;
    componentRestrictions:{country:’fr’} around line 470



2.This change affects the geolocation fields in search (that are using the Open Street Api)

Change the file js/geolocation_search_radius.js

Add this code  :countrycodes:’fr’


For Country Codes look over this link