Mongols favored trade even before Ghenghis khan, they hunted/herded very few were weapon makers or potters/weavers, many items they needed to living had to be traded. As Ghenghis khan rose to he realized the Mongol army was gonna need many things for battles. To facilitate trade Ghenghis offered protection to merchants that came from east and west, offered higher status for merchants allowed by the Chinese or Persians who despised trade and traders.
<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>
The answer is critical thinking !!