Which of the following explains the significance of the Qin Dynasty introducing iron technology?

Question

civicsiscool44 · Answer

Answer choices????????

lillianm11 · Answer

it provided a way for his armies, as well as merchants and diplomats, to travel efficiently and quickly from the capital 
 it provided a way for his army to escape westward in the event of a Korean invasion of the North China Plain 
 it provided a way for only the royal family to travel safely from city to city in ancient China 
 it provided a way for foreign traders to enter the Chinese territory to bring much needed goods