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Some earthquakes can be much worse than others for many different reasons, but if you take a look at Mexico City there is a specific reason earthquakes in that location are so bad: liquefaction[1]. Many years ago the location of where Mexico City is today is what used to be lakes which plays an important role in why earthquakes in Mexico City cause so much destruction and death. Since the land used to be lakes, the sediment is very fine. When an earthquake occurs, the vibrations make the fine sediment act as a liquid which causes a lot of movement in the city. The liquefaction mixed with a large magnitude is the main cause for mass destruction and many deaths/injuries.
- ^ "Earthquake Glossary". earthquake.usgs.gov. Retrieved 2020-12-01.