Comments are personal:



 Khas were either Buddhist.When
Sankaracharya defeated the Buddhist monk and thousand of Buddhist books  were buried. Since then Sanskrit Literature
emerge strongly and Brahman started various rules. They offered Khas as Chhetri
and 2nd in the row in the race hierarchy. Khas joined the tribe of Brahmin
may say under  rule of 
literate Brahmin.

Their weapon was the  Sanskrit language ,
and what ever written in Sanskrit were taken as holly books. In each era new
testaments in Sanskrit came and started to new rules just to degrade human
lives specially women and lower cast people.  They needed a kingdom and defender, Khas who
were the fighter placed as king but the kingdom was ruled by Brahmin in the
back. The actual ruler were Brahmin, kings were fighter and defender of the
territory.

The worst part is, as the population went illiterate, it was easier for them to
rule keeping layer of cast system within the society.



In every society from east to west such things had happened, some of them got
new ideas and moved ahead but we are still the same.

So do not forget the Actual rule of Brahmin in Indian peninsula and their grip on society.