Why Mexico is Prone to Earthquakes

The location of Mexico makes the country prone to such strong earthquakes that it has encountered such as the two recently in September because it is in a “subduction zone.” Meaning two of the planet’s tectonic plates collide. As for Mexico, in is located in a part of the earth where an ocean plate is slowly sinking underneath its continental plate. Through time, pressure builds since the friction between one slab of the crustal plate sliding down another, the pressure becomes so high that the energy forms and is released through an earthquake. The subduction zone runs across the western coast of Central America, to Central Mexico, to Panama. The most powerful earthquakes happen within  subduction zones.

https://www.nytimes.com/2017/09/20/world/americas/mexico-earthquakes-explainer.html