Windows 10 build 14393 and later have a hidden option in Settings. It is called "Share" and can be enabled with a Registry tweak. Once enabled, the Share page will allow you to configure apps visible in the Share pane of Windows 10.
The region (home) location in Windows is used by various Windows services and third party apps to provide you country-specific information. For example, a news app can show you local news, and a weather app can utilize location information to provide you the actual weather forecast.