Fill in the blank Choose the word or phrase that best completes each sentence. pls hurry it is timed

Early Indian engineers used rulers to provide

.

Metallurgy enabled the early Indian people to

.

The use of coins enhanced

within India.

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

may i ask which amendments?