The term " frontier" (or curve) is a diagram showing the maximum amount of goods and/or services an economy can produce.

The correct answer is Production Possibility Frontier (PFF).

Explanation:

The term Production Possibility Frontier (PFF) (or Curve) is a diagram showing the maximum amount of goods and/or services an economy can produce.

A curve which depicts all the maximum output possibilities for two goods, with given set of inputs consisting of resources and other factors is called a Production Possibility Frontier.

The Production Possibility Frontier assumes that all inputs are used efficiently, representing the point at which a country's economy efficiently producing its goods and services.

for the 2 countries u can do china and america because america has a democratic government while china has a communist government.

a democracy is a government run by the people either by directly voting or indirectly by electing representatives. an oligarchy is a government run by a few or a small group of people. a democracy and oligarchy are similar because both in an oligarchy and an indirect democracy, a small group of induvial determine the laws for a large group of people they are different because in an oligarchy it is easier to control and they do not have to answer to a large number of people in the country, unlike a democracy where they do have to answer to a large number of people an county that is a democracy would be the united states. a country that is an oligarchy would be the china.

the answer is c. to explore the louisiana purchase