Choose all that apply. what are three characteristics of the great wall of china?

(these are the options for this question that might help the next person if they are included)

a)longest humanmade structure at more than four thousand miles

b)actually constructed from a series of smaller walls that were connected together

c)completed by the Qing Dynasty

d)built to guard against Mongol invaders

e)located along the southern border of China

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity