Countries were separated by continental drift
<span>There are lots of countries that do not have volcanoes, some of them include:
South Africa, Nigeria, Zimbabwe, Malawi, Djibouti, Somalia, Algeria, Morocco, Tunisia, Liberia, Denmark, Norway, Wales, Finland, Sweden, Ireland...
These countries, as well as the rest that lack volcanoes are all countries that are not lying above collision or submersion lines between the tectonic plates, nor have a hot spot beneath them, which is where the volcanoes appear. The best known is the 'Ring of Fire' in the Pacific, where most of the active volcanoes are.</span>
Its called till just look it up
Earth scientists use GPS to monitor earthquakes and the shifting of the earth's tectonic plates. ... Satellite builders use GPS receivers to track the positions of their satellites. GPS is being installed in automobiles so that drivers not only can find out where they are but also can be given directions.