Earthquake is one of the natural disasters. It can happen all the time because we live on the earth crust and the earth crust can move all the time so it affects every organism by shaking the ground and we call it 'Earthquake'.
I think Japan has the most earthquake because the topography in Japan is full of volcanoes and they always eruption. That’s why Japan always has the earthquake. Moreover, there is the most severest quake in the history of japan. It’s about 9.0 magnitudes and it caused tsunami to damage all of facilities. It’s easy to see that japan always has natural disasters all the time. So the prevention and regulation are very good to cope with aftershocks and natural disasters.
Finally, natural disaster regularly happen and we can’t know when the earthquake is coming. Thus, we should be awake and careful in every single day. Therefore we will live peacefully.