Complex sentence: The party arose as a result of internal divisions within PHON in October 2000 after Pauline Hanson expelled David Oldfield, co-founder of PHON and the sole representative of that party in the NSW State Parliament.
Split into simpler sentences: The party arose as a result of internal divisions within the original party, Pauline Hanson's One Nation (PHON). In October 2000, Pauline Hanson expelled David Oldfield, co-founder of PHON and the sole representative of that party in the NSW state Parliament.