Mexico, I believe was the second to become independent, after the United States
Six different volcanoes joined together
It's because there are bigger faults in Caliifornia.Which is San andres which is 800 miles which cuts through California.We all know earth is contesntly changing, and earthquakes are apart of earth chaging.So every times the tictonic plates moves it causes California, and other states close by to aswell, but not as bad.
Ridge push is a process in which the unlifted ridge is thought to push the oceanic plate towards the subduction zone. Slab pull is a process where by the weight of a subducting plate help to pull the trailing lithosphere into subduction zone. Ridge lush is cause by the potential energy gradient from the high topography. Slab pull is caused by negative buoyancy of the subducting plate.