A subduction zone is also generated when twooceanic plates collide — the older plate is forced under the younger one — and it leads to the formation of chains of volcanic islands known as island arcs.
Answer:
Explanation:
In Sri Lanka there was distrust between the Sinhala and Tamil. These communities escalated their problems into a full-out civil war because Sinhala was declared as the only official language and they completely disregarded the Tamil. Besides this, the Sinhala had privilege over the other side in government jobs and almost all higher positions in the bureaucracy.
The correct answer is - plate tectonics.
The convection currents in the mantle, are having very high temperatures and very high pressures. Because of that, they managed to crack the crust, and thus divide the surface of the Earth in multiple peaces, or as we call them, tectonic plates. The very high pressure from bellow manages to push the tectonic plates in certain direction, and even though that movement is only a couple of cm per year, on the long term it has huge effects on everything on the planet.