Introduction Fenian Terrorism Confronts Atlantic Anglo-Saxons, 1865-1870 Agrarian Terrorism Confounds Atlantic Anglo-Saxons, 1870-1882 Clan-na-Gael Terrorism Congeals Atlantic Anglo-Saxon Ideological, 1880-1887 Sinn Féin Terrorism Cements Atlantic Anglo-Saxon Collaboration, 1919-1922 Conclusion