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.
Geography Statistics of United States Of America. 1  Geographic Center: In the continental 48 states, it is a point 2 miles to the northwest of Lebanon, Kansas; with Alaska and Hawaii included, that point is near Belle Fourche, South Dakota.  Mt. McKinley, (Alaska) 20,320 ft. (6,194 m).