Sometimes persons do not place themselves in such locations. However some do, others that don't , usually are affected as a result of some tectonic activity or eventual slope instability that results in landslides . Eg earthquakes prone or slopes affected by deforestation.
An earthquake takes place, because there are tectonic plates which sometimes crash into each other, some places are more affected then others because some places are closer to the tectonic plates then others.
Because in some places there are tectonic plates that are colliding where others have little activity.
I can name three: San Francisco Tokyo Mexico City Hope this helps.
Plate Boundaries.
boundries
Tectonic Plate boundaries
Divergent Boundary
Tectonic Plate boundaries
Because of the tectonic plates. Some countries are on the edge of tectonic plates.
Faults represent tectonic activity. Major faults represent the edges of tectonic plates on the surface of the Earth, whereas smaller faults may occur where the crust has been moved, smashed, uplifted, or otherwise disturbed. Tectonic activity occurs due to the "plastic" deformable material of the upper mantle (called the asthenosphere) that lies underneath the crust and which allows the plate tectonics to maintain inertial speed and in some places subduct into the mantle.
The island of Iceland is situated at the join between two tectonic plates. These joints between plates are the places where volcanoes occur throughout the world as liquid rock (magma) can easily seep up between the plates causing volcanic activity.