The Tectonic Forces is responsible in that creation
It's the convection currents that happen in the asthenosphere part of the Earth Crust , causing the African Plates to Diverge and continuously produce Rifts that will eventually formed a rift valley
This process can take millions of years
Answer:
The Tang rulers changed China were the enlargement of China, extension of roads and canals, helping to tie the empire together. Social changes that occurred in China during the Tang and Song Dynasty were a new upper class.
They might start a riot or they just wont care
