3 questions, each answered from published authorities with the sources listed.
Photo by CEphoto, Uwe Aranas, "Borobudur-Temple-Park Indonesia Stupas-of-Borobudur-02", licensed under CC BY-SA 3.0, https://creativecommons.org/licenses/by-sa/3.0AuthorCEphoto, Uwe Aranas · CC BY-SA 3.0File source