Where did European cities develop during the Middle Ages? Choose three correct answers. Cities developed near trade routes.
Cities formed high in the mountains.
Cities developed near wide, open plains.
Cities formed on land where food could be grown.
Cities formed near water sources, such as rivers or channels.

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

ford’s revolution of the assembly like to make cars less expensive

explanation:

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

b. the 200th birthday of the united states