Visitor Location Widget to initialize within a certain region

Hello

I am embedding multiple HTML widgets into a website.
When embedding a “Visitor Locations → Visitor Map” by default, the widget loads a World View.
I want the map to load up initially into a certain country (United States), like so:

Here is the code I am using

/index.php?module=Widgetize&action=iframe&widget=1&moduleToWidgetize=UserCountryMap&actionToWidgetize=visitorMap&idSite=1&disableLink=1&widget=1&period=range&date=previous30

I am guessing I need to add some parameters to initialize widget differently, but I cannot find any information on that.
How do I do that?

Thank you