what " the rest of the world "

Recently a worldwide survey was conducted by the United Nations.
The question was: " What is your opinion on the food shortage in the rest of the world, please?"
The survey was a huge failure.
In Africa,they did not know what "food' meant.
In western Europe, they did not know what "shortage" meant.
In eastern Europe, they did not know what "opinion" meant.
In South America, they did not know what " please" meant.
And in the USA, they did not know what " the rest of the world " meant.
(The World Joke Book)