As mankind has changed drastically over the time of history so has their geographical extension. Today settlements can be observed from Oymyakon, Russia to Death Valley of California and from Alaska to Australia. Population has spread all over the world. But the proportion of concentration differs from one part of the world to another e.g., temperate regions are experiencing population boom while in equatorial and polar regions they are concentrated in dispersed scattered groups. on the basis of political boundary China, India, Bangladesh, Brazil, Nigeria, Indonesia, Pakistan, USA, Russia, Germany, Italy etc countries shows a huge number of population while some other countries like Greenland, Mongolia, Namibia, Australia shows less population in comparison.

As mankind has changed drastically over the time of history so has their geographical extension.