Tasmania is the southernmost state of, for 10 points, what island nation that borders the Great Barrier Reef and features such cities as Brisbane and Sydney?
The Tanami Desert is located within this nation, and its extreme north is known as Arnhem Land, which is separated from the Cape York Peninsula by the Gulf of Carpentaria. Two states within this nation are separated by the Bass Strait, and its longest river, the Murray, forms just west of Mt.  Kosciuszko (KOH - "see" - ew - sko). The lowest point in this nation is also at its largest body of water, Lake Eyre ("AIR"). Tasmania is the southernmost state of, for 10 points, what island nation that borders the Great Barrier Reef and features such cities as Brisbane and Sydney?
The Tanami Desert is located within this nation, and its extreme north is known as Arnhem Land, which is separated from the Cape York Peninsula by the Gulf of Carpentaria.
Australia