Q. Australia's longest river system is made by__?
Answer:
Darling River
Notes: The Darling River is the third longest river in Australia, measuring 1,472 kilometers from its source in northern New South Wales to its confluence with the Murray River at Wentworth, New South Wales. Including its longest contiguous tributaries it is 2,844 km (1,767 mi) long, making it the longest river system in Australia