Complex sentence: By the early 1990s, the LHMU had become powerful with close links to Labor politicians such as Bob Hawke, Neville Wran and Lionel Murphy.
Split into simpler sentences: By the early 1990s, the LHMU had gained a good deal of political power. It has close links to Labor politicians such as Bob Hawke, Neville Wran, and Lionel Murphy.