Why is GDP per capita used as an estimate of the average standard of living in a
country?

The GDP is the total output of goods and services produced in a year by everyone within the country's borders. Real GDP per capita removes the effects of inflation or price increases. Real GDP is a better measure of the standard of living than nominal GDP. A country that produces a lot will be able to pay higher wages.

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.

where is the passage