In 1921 the Irish Free State won its independence from Great Britain and introduced its own coins and notes in 1928, although the Irish pound remained tied to sterling until 1979.

BBC: Coining a new Europe

After Ireland became free from the British in 1922 (when the War of Independence resulted in the declaration of the Irish Free State), the government, with the support of the Catholic Church, passed the Censorship of Film Act.

BBC: The evolution of Irish cinema