'Sinhala Only Bill, (1956), act passed by the government of Ceylon (now Sri Lanka) making Sinhalese the official language of the country. The bill was the first step taken by the new government of S.W.R.D. Bandaranaike to realize one of the main campaign promises that had brought about his landslide victory in the 1956 general election. Violently opposed by the Tamil-speaking minority in Ceylon, the passage of the bill was followed by rioting. Hope this helps u.......