Complex sentence: The United Irish League (UIL) was a nationalist political party in Ireland, founded and initiated on 16 January 1898 at Westport, County Mayo by William O'Brien, with the support of Michael Davitt and John Dillon MP, who worded its constitution.
Split into simpler sentences: The United Irish League (UIL) was a nationalist political party in Ireland. It was founded and initiated on 16 January 1898 at Westport, County Mayo by William O'Brien, initially supported by Michael Davitt and John Dillon, who worded its constitution.