[quote=MS-24H]
GDP:? 
[/quote]

Gross Domestic Product. To put it very simply, it is the yearly income of that nation before they pay their bills. I assume the numbers most people are putting down are "Billion", because having a GDP of $250 would be horribly sad. Individuals on welfare have a higher gross income than that. 

For reference, the United States has a GDP of 14 trillion, as does China. Spain has a GDP of 1.5 Trillion. Ethiopia has a GDP of 41 Billion. You get the idea.