The answer that best applies to both the Tang and Song dynasties would be C. A Reliable food production and distribution system. This gave both dynasties the ability to thrive.
I think it's called a merit system after the spoils system but I'm not 100% sure
B, because when Japan attacked China, China unified to fight a common enemy.
Answer:
The mother ditch, or main ditch or canal, leads water to the headgates, which control the main flow. Lateral ditches run perpendicular to the main ditch and bring water to the fields for field irrigation. A drain canal brings water back to the stream.
Explanation:
Answer:
As the irony of those times would have it, Razia Sultan failed as a ruler because she was a woman and failed as a woman because she was a ruler.
