Aborigines some 40 000 years ago
However, if the question refers to the first European explorers, credit is generally given to Edward John Eyre, who crossed from South Australia to Albany in the west in 1840-1841. He was the one who made the first overland crossing, in horrendous conditions, with just one loyal aboriginal guide, after his other two aboriginal guides killed his overseer and stole most of the rations.
Eyre was not the first to cross Australia from south to north, which was his original goal. However, he was the first to cross Australia from "east to west", even though he didn't start from the eastern coast. He was the first to cross the Nullarbor plain to the west.
EAST or WEST or SOUTH or NORTH?
This was Ludwig Leichhardt. He disappeared in 1848 after leaving the Darling Downs in Queensland in an attempt to cross to the west.
South America is west of Africa and east of Australia.
ftgtththththththt
Well, Yes, because Australia is west of South America if you cross the Pacific Ocean. Australia is east of South America if you go through the Indian Ocean.
The Pacific Ocean is due east of Australia.
Sydney is on the east side of Australia.
The first people to cross Australia south to north were Burke and Wills. However, Burke and Wills did not return alive. The first recorded person to cross Australia and survive was John MacDouall Stuart. Then there was John McKinlay, who led the South Australian relief expedition for Burke and Wills. He set out from Adelaide on 16 August 1861 and, during the course of his search, McKinlay's journals show that he crossed the continent from south to north, then east and back again, possibly making him the uncredited first explorer to cross the continent and survive. The first to cross the continent east to west was Edward Eyre, doing so in 1840-41.
Edward Eyre's main achievement was being the first European to successfully cross Australia overland from east, near Streaky Bay on the Eyre Peninsula, to west, near Albany in Western Australia. He had originally attempted to be the first to cross the Australian continent from south to north, but was stopped by salt lakes.
Australia is in Australia. And therefore neither east nor west of itself. If that makes any sense. It's abundantly clear that your question does not.
The direction of Australia from Nepal is south east.