The document discusses the causes of conflict between the Sinhalese and Tamil ethnic groups in Sri Lanka. It identifies four main reasons for tensions: 1) citizenship rights for Indian Tamils which excluded some from citizenship; 2) the "Sinhala Only" language policy which made Sinhala the official language; 3) biased university admission criteria favoring Sinhalese students; and 4) government resettlement policies that moved Sinhalese populations into predominantly Tamil areas, disrupting the Tamil claims to certain territories. Each of these factors marginalized the Tamil population and contributed to the escalation of ethnic conflict over time in Sri Lanka.