Demilitarized Zone<span> (</span>DMZ<span>)</span>
My answer would be A. White middle class families.
In one of the first posts on this blog, I compared Lincoln’s two-minute address with the two-hour oration by Edward Everett on the same occasion. Today the former is universally regarded as one of the most famous speeches in American history; the latter is largely forgotten.
The correct answer is D, opportunity costs. Making (economic) decisions requires trading off one good, service or experience against another. Most of us cannot acquire everything we want, so often we have to make decisions on what to buy or how to invest our limited resources - eating out or going to the movies, buying that video-game or saving the money for a new bicycle, traveling to the mountain or to the beach. By choosing one rather than the other, we are trading off, that is, making a sacrifice and renouncing to our other preferred choice. In these examples, if you decide to go to the movies, the opportunity cost is the loss of the possibility of eating out.
Answer:
Discovering gravity
Explanation:
You have not provided answer options, but by far his most famous is discovering gravity. There are other important contributions, like his three laws of motion.
