OUT OF NATURAL SELECTION- When mankind evolved, no body will give you LAND -no body will call you RAJA.
YOU HAVE TO FIGHT TO MAKE IT. LAND has to be tilled to produce AGRICULTURE, those INVENTORS-SCIENTISTS
became the FIRST LAND OWNERS. In time, various other sectors grew SAFEGUARDING THE TRADE SECRET -which were handed over
genaration to genaration by family.
Rigidity in Caste System came Out of Favoured Racial Purity as it was strongly believed that OUT OF THE NATURAL SELECTION OF BEST TRADE -BEST MIND -BEST SALARY, was kept intact as a good WARRIOR naturally becomes TOP CLASS MAN or WOMAN. And Not to forget (EVER!) the White Man's successful concept of DIVIDE, RULE & CONVERT!