Iron metallurgy .a. metals production process imported into "China" towards the end of the Xia Dynasty Era b. restricted practice of metals production for nobles and completely forbidden to peasants c. a more abundant resource for metals manufacture that enabled Zhou dynasty rulers and their allies to expand the size of their territory via military campaigns d. metals production used exclusively in Northern "China"

c. a more abundant resource for metals manufacture that enabled Zhou dynasty rulers and their allies to expand the size of their territory via military campaigns

Explanation:

During Zhou dynasty  (1046-256 BCE), iron tools replaced bronze and its technology advanced in China and iron was used in producing better weapons. This was the beginning of the iron age in China which started around 600 CE.

the answer is richard nixion

b

explanation: