Describe two (2) specific aspects about the Great Wall of China, such as facts about its size, length, purposes, varied materials, labor force, and its phases of construction. Consider the various purposes of such a wall and its impact for good or bad, and compare the Chinese wall in this respect to some specific wall of more modern times.
Some extra information that may help.
Chapter 7 (pp. 216-218, 225), early phases, (pp. 617-618) later phase
Explore wall interactively at https://www.airpano.ru/files/China-Great-Wall/2-2
Video at https://www.discovery.com/tv-shows/other-shows/videos/discovery-atlas-china-revealed-the-great-wall.htm
UNESCO article at https://whc.unesco.org/en/list/438
"China's Wall Less Great in View from Space" article at https://www.nasa.gov/vision/space/workinginspace/great_wall.html