Complex sentence: Although the largely-secular laws of Indonesia apply in Aceh, the provincial government passed additional regulations, some derived from Islamic criminal law, after Indonesia authorized its provinces to enact regional regulations ("perda") and granted Aceh special autonomy to implement Islamic law.
Split into simpler sentences: Although the largely-secular laws of Indonesia apply in Aceh, the provincial government passed additional regulations, some of which were derived from Islamic criminal law. This was made possible because Indonesia authorized its provinces to enact regional regulations ("perda"), and granted a special autonomy to Aceh regarding the implementation of Islamic law.