Inclusions based on consensus 
I have inserted some consensus made even I am highly disagree with these facts as major reasons
I have included ceylon citizenship act and policy of standardisation. Since I am inserting and I don't like to get a blame for these kind of odd reasons I am linking the consensus.
I haven't included how many sinhalese killed when kalinga magha invaded rajarata or how many families became homeless. But peole only want to see result of the final war for the sake of neautrality.