13. Later that afternoon, British forcesopenedfireon the crowd at a football match in Dublin, killing 14 civilians.

17. Ireland was to become a self -governing dominion of the British Empire.

18. British monarch would be the head of state of the Irish Free State (SaorstátÉireann).

19. Northern Ireland (which had been created earlier by the Government of Ireland Act) would have the option of withdrawing from the Irish Free State within one month of the Treaty coming into effect.

20. - Boundary Commission.

21. Britain, for its own security, would continue to control a limited number of ports, known as the Treaty Ports, for the Royal Navy.

23. The Irish Civil War cost the lives of many of the leaders of the independence movement, notably the head of the Provisional Government Michael Collins and anti-treaty Republicans Harry Boland, Rory O'Connor, Liam Mellows, Liam Lynch.

26. Military organization descended from the Irish Volunteers.

27. In 1919, involved the re-organization of the Irish Volunteers as a guerrilla army

28. From January to July 1920, involved attacks on the fortified police barracks located in the towns.

29. From August 1920 to July 1921, IRA moved away from attacking well defended barracks and instead using ambush tactics.

30. Campaign against British rule in Ireland in the Irish War of Independence from 1919–1921.

31. The original IRA is formed in 1922 after the signing of the Anglo-Irish treaty.