INDUS
                                 VALLEY
                               CIVILISATION
                               
 Around 2000BC to 1800 BC, nomadic tribes of early Aryans from the Caucusus
 region spread out in many directions - one of which was into the Indus
 Valley area of Northern India where a civilisation flourished for some
 centuries and the ancient Hindu religion began to develop. Segregation
 in the form of the caste system also came into being to prevent the 
 admixture of the invaders with the aboriginal Dravidian tribes, traces
 of this ancient divide still exist today in modern India.