<span>this would be the concept of operations. a concept of operations is something that describes the characteristics of a system that has been offered from the point of view of the person who will be using the system.</span>
I believe the answer is A.
The used there engineering skills to control water flow to bring fresh water in
This trail<span> was the only feasible land route for settlers to get to the West Coast. From 1843 until 1869 when the first transcontinental railroad was completed, there were over 500,000 </span>people<span> who made the trip in covered wagons pulled by mule and oxen.</span>
The Classic Hollywood narrative is well suited to give the impression of speed. its tradition of concise exposition and tightly woven plotting can carry us along swiftly. Classic Hollywood often centers stories on characters with definite traits who want to achieve specific goals. Classical narrative <span>ties one scene to another.</span>
