Complex sentence: Millhouse founded the Liberal Movement and the short-lived New LM which merged into the Australian Democrats in 1977.was appointed to fill a casual vacancy in the Senate by the Labor premier Don Dunstan, on 14 December 1977.
Split into simpler sentences: Millhouse founded the Liberal Movement and the short-lived New LM which merged into the Australian Democrats in 1977. She was appointed to fill a casual vacancy in the Senate by the Labor premier Don Dunstan, on 14 December 1977.