USA. But it depends what you mean. They generate the largest income but have the largest costs. They have little spending power while China has a huge amount. China is also the second largest economy and is scheduled to overtake the US in the next 10-15 years in that as well. So if you are talking about how much real money they have China takes it.
The world's richest country in the world currently is Luxenburg.
The world's richest country is the United States while the poorest is Tuvalu is the poorest.
Switzerland
USA worlds richest country
Kuwait is the 4th richest country in the world 2010
oil and gas industry
America and it migth be china because of the population
china is richest country in the world
America
It's Singapore.
The good old USA (as of 2010)
Bill gates is the worlds richest man he has 58.698352 billion dollars