C
What is causing land subsidence in Mexico City? What are the effects of land subsidence?

In fact, situations such as these are happening throughout Mexico City, where long-term extraction of groundwater has caused significantland subsidence and associated aquifer-system compaction, which has damaged colonial-era buildings, buckled highways, and disrupted water supply and waste-water drainage.

Explanation:

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.

travels along an axon. this triggers a wave of electrical activity that passes from the cell body along the length of the axon to the synapse