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.

the outcome of 1970 oil crisis in united states was that, they began to search ways on how to reduce oil.

in 1970 was a period when there were energy and oil crisis. those who were major centers for industrialization were forced to keep way from supplying of petroleum.

some of the result of this crisis was economic growth became stagnant because prices of oil surged.

due to the increased prices some countries like mexico and norway benefited.

both eastern and western early north american cultures were known for building wigwams and longhouses.

wigwams, also called wetus, were small houses of 8-10 feet tall, made of wooden frames covered with woven mats and sheets that were used by algonquian indians. similarly,   longhouses were also used by algonquian and the iroquois tribes, and they were built as well with pole frames and elm bark covering. however, the main difference between wigwams and longhouses is that the latter was much larger than the former, with 200 feet long, 20 feet wide, and 20 feet high with inner raised platforms used for sleeping space.