Select all that apply. in what way(s) did the chinese use steel and iron? a. to build submarines b. to make chains for suspension bridges c. to build the great wall d. to make agricultural tools

The correct answers are, B) to make chains for suspension bridges, and D) to make agricultural tools.

The Chinese used steel and iron to make chains for suspension bridges and to make agricultural tools.  

Since the middle age, China has used the iron to make agricultural tools and later, chains for suspenssion bridges. Although in early years most of the steel was used for war purposes, the Steel and iron industry in China has developed considerably quickly due to the market reform and the autonomy of the industry, that began in 1970, as well as new technologies to produce steel.  

the first historical instance of china engaging in internationalism was during the han dynasty.[1] at the start of the han dynasty, the huns in the north were attacking the frontiers of han and trying to obtain riches. emperor wu of han wanted to gain an alliance with a country called dayuezhi so the two countries could join together and fight against the huns.[2] to obtain this alliance, emperor wu sent zhang qian to the west to establish economic and cultural connections.[2] history records that during the han dynasty there were four primary avenues of contact between china and europe. they included the northern land route, the central land route, the southern sea route, and the far southern sea route.[1] the most famous of these routes is the central land route, or the classical silk road, comprising a network of roads stretching from northwest china to the ports of syria and the black sea, which passed through the oasis of the turkestans and northern persia.[1] the silk road was significant for chinese emperors because it provided dominance over central asia by developing resources and provided new markets for the export of china's most valuable resources.[1]

bbgftrtyc