Opportunity cost refers to a value that a person could have have received but which the person gave up in preference for another value. It is also called alternative cost. In the scenario given above, Harry decided that the most important commitments for him are to go over to his parent's house and to attending his friend's birthday party. But eventually, he gave up going to his friend's birthday party and go to his parent's house instead. So the opportunity cost in this scenario is the friend'd birthday party which Harry gave up.
Answer:
American Civil War
Explanation:
As a novel that attemptsto offer a more lifelike and liquid retelling of the Battle of Gettysburg, Michael Shaara's The Killer Angels portrays actual historical figures and the actual events in which they participated during the Civil War.
Explanation:
the interational body which formed in europe (in 1889)to coordinate the efforts of socialists all over europe was called