What were the reasons for alienation of Sri Lankan Tamils? What was the effect of this on the country?

The reasons for alienation of Sri Lankan Tamils were as mentioned below:
(l) Democratically elected government adopted a series of majoritarian measures to establish Sinhala supremacy1956, an Act was passed to recognise Sinhala as the only official language thus disregarding Tamil.
(ii) The governments followed preferential policies that favoured Sinhala applicants for university positions and government jobs.
(iii) A new constitution stipulated that the state shall protect and foster Buddhism. As a result of above measures, the relation between Sinhalas and Tamils strained over time and the distrust between the two communities turned into widespread conflict because Tamils felt that they were being denied equal political rights and were discriminated in government jobs and other opportunities.