Answer:
The Yellow River (Huang He River) is often called the cradle of Chinese civilization. With a length of 3,395 miles (5,464 km)
Imperial Civil Service Examination Established in 605 CEwas open to all male citizens, was based a great deal on Confucianism, gave even common herd a change to work in government, and was was very popular with the working class, and made sure the most excellent and brightest worked in government.hope it help
Rocky mountains?i think this is correct but i am not a 100% sure. hope this helps