Pan-Celtism refers to an intellectual and political movement in the late 19th and early 20th century referring to the formation of a single Celtic state, typically based out of Ireland. The idea of Pan-Celtism began after the Irish Civil War in the 1880's as part of a potential Irish rejection of the English language and influences, and greatly influenced many of Ireland's future leaders in succeeding decades. The ideology tapered out in the 1890's and early 1900's after the massive economic boom in Ireland and the death of ideological godfather Seamus Kinney. The idea of Pan-Celtism was revived after Ireland's success in the Faroes War and its growing colonial holdings in Africa and Oceania began the idea of an Irish Empire. The idea lasted well into the 1920's during Ireland's Golden Age