Massive, irregularly shaped slabs of solid rock, composed of both continental and oceanic lithosphere, that form the Earth's outer shell. Their movement and interaction are responsible for earthquakes, volcanic activity, and mountain building.

An international organization historically comprising states that sought to remain independent from the major power blocs during the Cold War. Indonesia is a founding member, along with India, signifying its historical stance on international neutrality.

A string of volcanoes and sites of seismic activity, or earthquakes, around the edges of the Pacific Ocean. Roughly 90% of all earthquakes occur here, and it is dotted with 75% of all active volcanoes, surrounding several major tectonic plates.