In this case the answer B is correct; Iron.
Metalworkers in ancient India were renowned for their skills in creating different types of objects that were of very pure quality and the highest standards. These of course were not that common and not just anyone could obtain or afford such items.
C. the closing of the First Bank of the United States
It represents powerful and no need of help
<span>The first dynasty that was the first group in China to use written records was the Shang Dynasty, also known as the Yin dynasty, which ruled from 1600 BC, until 1046 BC., when it was succeeded by the Zhou dynasty. During their reign, the earliest forms of written records originated, so they were the ones responsible for devising the first writing techniques in China, at least.</span>