WHAT MAKES AMERICA DIFFERENT? Most people think America is all about success. I see it a little differently.   Is America really that great? Or is the United States just like any other nation? Outsiders tend to be the best judge of character, and Nick Adams, a best-selling Australian author and political commentator, gives an outsider's view of the USA.   G'day there. As an outsider, I have a unique perspective from which to view America. As an American friend said to me: "Sometimes it takes someone on the outside to remind us what we are like on the inside." I'm an Australian -- you might have already guessed that -- and I love my home country. And I am proud that my nation has long been a reliable American ally. But I know that Australia is not America, and that my country has not achieved what America has achieved. No country in human history has.  What makes America different? There are many answers, but start with one you might not have thought of. M