The document discusses the linguistic issue in Ireland through four main sections. It first provides background on the Celtic languages and their origins. It then discusses the introduction and spread of the English language in Ireland from the 12th century onward. The third section examines nationalism, language, and identity in Ireland. Finally, it outlines language planning efforts by the Irish government in the 20th century focused on education, Gaelic-speaking regions, and public services to promote the Irish language.