This is the question hurry plz

I think its B

Explanation:

I think its B because the Greeks did make advances in medicine, along with others like astronomy, but some of the other answers might be right. I'm pretty sure its B tho. Srry if wrong :(

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof

answer: are there any

explanation: