The Han Dynasty played a great role in developing the Silk Road which would transfer wealth and ideas for millennia, and also invented paper. From Wikipedia, the free encyclopedia. Though the Han enjoyed great military and economic success it was strained by the rise of aristocrats who disobeyed the central government. After AD the Han Dynasty broke up into rival kingdoms. This section does not cite any sources. The controlled use of fire first occurred , years ago in the Middle Paleolithic. The first cultures arose in what is now Sudan before the time of a unified Egypt , and the most widespread culture is known as the Kerma civilization.