How can I obtain the current country/region of the computer

[#1]

It is necessary to record the user's region ( likes US, Canada, Europe, etc. ). May I ask what methods are available to obtain the current country/region of the computer? Is it possible to get it using Get Environment Variable()? I couldn't find which variables this function can retrieve.

[#2]

I believe you have to get it from the Windows Registry. 

powershellCmd = "powershell -command \!"(Get-ItemProperty -Path 'HKLM:\\SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation' -Name 'TimeZoneKeyName').TimeZoneKeyName\!"";

timezone = RunProgram(
  executable("cmd.exe"),
  options({"/C", powershellCmd}),
  readFunction("Text")
);

Show(timezone);

[#3]

I would like to confirm whether the returned timezone information differentiates between specific regions.
For example, both Japan and Korea are in the +9 timezone—will it return "Tokyo Standard Time" and "Seoul Standard Time" separately?
Or will it show the same name for both, such as "Tokyo Standard Time," to indicate the timezone?