Which settings was configured when installing application

Dear all,

I would like to know how we could determine which settings was configured when installing an Android application.
For example, when I installed an application, it will ask about language and country when running that app first time.
After that, I uninstalled that app, clear cache and all the folder relating to it and try to install it again, it didn’t ask about the language and country anymore.
I did the test (restore and erase all data of my mobile) and install again, it will ask about country and language for that app.
So I assume that it configured something somewhere.
I would like to know how I could track it.

Thank you very much,
Kenny