Irish men, women and children on their knees praying

Irish men, women and children on their knees praying in Downing Street during the Anglo-Irish Treaty meetings of 1921 The Anglo-Irish Treaty aka The Treaty, was an agreement between the government of the United Kingdom of Great Britain and Ireland and representatives of the Irish Republic that ended the Irish War of Independence and provided for the establishment of the Irish Free State From These Tremendous Years, published 1938. (Photo by: Universal History Archive/Universal Images Group via Getty Images)