Where do tectonic activities such as earthquakes or volcanic eruptions tend to occur

Tectonic activities occur mostly at or near the areas near the surface of the earth where tectonic plates meet. These plates are like slowly shifting pieces to a puzzle that makes up the earth's outer skin. Activity can also occur where the Earth's liquid mantle comes particularly close to the surface. 

Cultural convergence is the theory that two cultures will be more and more like each other a very notable example of this is around the u.s.-mexico border, where