Explain why GDP can be computed either by measuring spending or by measuring income. Does the expenditure approach to computing GDP measure U.S. spending on all goods, U.S. spending on only U.S....

Explain why GDP can be computed either by measuring spending or by measuring income.

Does the expenditure approach to computing GDP

measure U.S. spending on all goods, U.S. spending on

only U.S. goods, or U.S. and foreign spending on only

U.S. goods? Explain your answer.