Australia is a developed country and one of the wealthiest in the world, with the world's 12th-largest economy. In 2014 Australia had the world's fifth-highest per capita income. Australia's military expenditure is the world's 13th-largest.
The third largest country of the world, the United States of America is located in North America between Mexico and Canada.
Hawaii, the only state not part of the mainland of North America, and the only US state located in the tropics, and is located approximately 2100 miles southwest of San Francisco. Hawaii is an archipelago of eight principal islands and numerous rocky islets, reefs, and shoals in the North Pacific Ocean.