I don't think anyone has done it so...
Since the lands of Indonesia are majority-Muslim, would it be possible to create an Indonesian-based Caliphate?
Perhaps, one of the Sultans in either Sumatra or Java have somehow managed to create an Caliphate/Empire by skill and luck.
Or a wide-scale Muslim rebellion which has successfully overthrow the Dutch East Indies colonial administration and their native allies, and then united into the Caliphate on basis of common faith?
Since the lands of Indonesia are majority-Muslim, would it be possible to create an Indonesian-based Caliphate?
Perhaps, one of the Sultans in either Sumatra or Java have somehow managed to create an Caliphate/Empire by skill and luck.
Or a wide-scale Muslim rebellion which has successfully overthrow the Dutch East Indies colonial administration and their native allies, and then united into the Caliphate on basis of common faith?