<h2>Answer:</h2>
<u>The term "</u><u>Production possibility </u><u>Frontier" (or Curve) is a diagram showing the maximum amount of goods and/or services an economy can produce.</u>
<h2>Explanation:</h2>
The production possibility curves is a hypothetical representation of the amount of two different goods. This is a curve depicting all maximum output possibilities for two goods. In other words production possibility curve measures the maximum output of two goods using a fixed amount of input.
A mixed economic system is a system that combines aspects of both capitalism and socialism. A mixed economic system protects private property and allows a level of economic freedom in the use of capital, but also allows for governments to interfere in economic activities in order to achieve social aims.
The correct answer should be During the Civil war because photography did not exist before the 19th century, which is when the civil war happened.
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ANSWER true Example- i looked it up with other brainly questions and that is what i got