You can establish what country will appear as a default in your Address field. Simply go to your Form Editor and click on the Address field to open its Edit Field panel.
In Advanced you’ll find a dropdown list labeled Default Country, where you can select the country that you want to have preselected when users access your form.
The first option in the list is *Autodetect*. This option is set to detect the country where form users are located, based on their IP addresses, and to have it preselected in the dropdown list.