Answer:
Han?
Explanation:
If by civilizations you mean ethnic groups it would be the Han.
Seismograph's drum feel the seismic waves. There is a weight that moves the pen so that when the seismic waves are felt, the pen jiggles and records it on paper.
The California Aqueduct should be the answer.
I think because of the reveloutiones was a very weak country
Ps my not sure
