 Australia's first major airline, Qantas, was founded in 1920 to serve outback Queensland.In 1922, Queensland abolished the Queensland Legislative Council, becoming the only Australian state with a unicameral parliament.In 1935, cane toads were deliberately introduced to Queensland from Hawaii in an unsuccessful attempt to reduce the number of French's cane and greyback cane beetles that were destroying the roots of sugar cane plants, which are integral to Queensland's economy, and have remained an environmental pest since that time.