Xia was the first dynasty and was formed by Yu the great. Shang was formed by King Ching Tang, had a system of writing and had bronze technology...
<span>1) educated people of the Middle Ages did NOT think (nor did the Church teach) that the earth was flat!! They had known otherwise for over two millennia! (Opposition to Columbus's plans was based on the belief that the world was LARGER than he thought, and the voyage too far to make safely. In fact, his CRITICS were correct about the earth's size!)
not sure</span>
History repeats its self so knowing about the past will help us understand the future
The third one. Hope this helped
