Dáil Éireann (Irish Republic) in the context of "Irish Declaration of Independence"

Southern Ireland (Irish: Deisceart Éireann, pronounced [dʲɛʃcəɾˠt̪ˠ ˈeːɾʲən̪ˠ]) was the larger of the two parts of Ireland that were created when Ireland was partitioned by the Government of Ireland Act 1920. It comprised 26 of the 32 counties of Ireland or about five-sixths of the area of the island, whilst the remaining six counties, which occupied most of Ulster in the north of the island, formed Northern Ireland.

The Act of 1920, which became effective on 3 May 1921, was intended to create two self-governing territories within Ireland, each with its own parliament and governmental institutions, and both remaining within the United Kingdom of Great Britain and Ireland. It also contained provisions for co-operation between the two territories and for the eventual reunification of Ireland. However, in the 1921 elections for Southern Ireland's House of Commons, Sinn Féin candidates won 124 of the 128 seats (all candidates were unopposed and no actual polling occurred), and ignored the parliament, assembling instead as the Second Dáil. The House of Commons of Southern Ireland—consisting of the four unionist members—met only once, while the Senate only met twice. Continuing unrest resulted in the Anglo-Irish Treaty and the Provisional Government, which administered Southern Ireland from 16 January 1922 to 5 December 1922: effectively a transitional administration for the period between the ratifying of the Anglo-Irish Treaty and the establishment of the Irish Free State. Its legitimacy was disputed by the Anti-Treaty delegates to Dáil Éireann.

The Irish War of Independence (Irish: Cogadh na Saoirse), also known as the Anglo-Irish War, was a guerrilla war fought in Ireland from 1919 to 1921 between the Irish Republican Army (IRA, the army of the Irish Republic) and British forces: the British Army, along with the quasi-military Royal Irish Constabulary (RIC) and its paramilitary forces the Auxiliaries and Ulster Special Constabulary (USC). It was part of the Irish revolutionary period.

In April 1916, Irish republicans launched the Easter Rising against British rule and proclaimed an Irish Republic. Although it was defeated after a week of fighting, the Rising and the British response led to greater popular support for Irish independence. In the December 1918 election, republican party Sinn Féin won a landslide victory in Ireland. On 21 January 1919 they formed a breakaway government (Dáil Éireann) and declared Irish independence. That day, two RIC officers were killed in the Soloheadbeg ambush by IRA volunteers acting on their own initiative. The conflict developed gradually. For most of 1919, IRA activity involved capturing weaponry and freeing republican prisoners, while the Dáil set about building a state. In September, the British government outlawed the Dáil throughout Ireland, Sinn Féin was proclaimed (outlawed) in County Cork and the conflict intensified. The IRA began ambushing RIC and British Army patrols, attacking their barracks and forcing isolated barracks to be abandoned. The British government bolstered the RIC with recruits from Britain—the Black and Tans and Auxiliaries—who became notorious for ill-discipline and reprisal attacks on civilians, some of which were authorised by the British government. Thus the conflict is sometimes called the "Black and Tan War". The conflict also involved civil disobedience, notably the refusal of Irish railwaymen to transport British forces or military supplies.

The Irish Republican Army (IRA; Irish: Óglaigh na hÉireann) was an Irish republican revolutionary paramilitary organisation who waged a guerrilla campaign against the British occupation of Ireland in the 1919–1921 Irish War of Independence. It was descended from the Irish Volunteers, an organisation established on 25 November 1913 that staged the Easter Rising in April 1916. In 1919, the Irish Republic that had been proclaimed during the Easter Rising was formally established by an elected assembly (Dáil Éireann), and the Irish Volunteers were recognised by Dáil Éireann as its legitimate army.

Following the signing in 1921 of the Anglo-Irish Treaty, which ended the War of Independence, a split occurred within the IRA. Members who supported the treaty formed the nucleus of the Irish National Army. However, the majority of the IRA was opposed to the treaty. The anti-treaty IRA fought a civil war against the Free State Army in 1922–1923, with the intention of creating a fully independent all-Ireland republic. Having lost the civil war, this group remained in existence, with the intention of overthrowing the governments of both the Irish Free State and Northern Ireland and achieving the Irish Republic proclaimed in 1916.

There were two governments of the 2nd Dáil, which were ministries of Dáil Éireann, the assembly of Dáil Éireann that was the legislature of the Irish Republic, a unilaterally declared state which lasted from 1919 to 1922. The Second Dáil was elected at the 1921 Irish elections on 24 May 1921. The 3rd ministry (26 August 1921 – 9 January 1922) was led by Éamon de Valera as president and lasted 136 days. De Valera resigned as president after the Dáil voted to accept the Anglo-Irish Treaty. The 4th ministry (10 January – 9 September 1922) was led by Arthur Griffith as president. Griffith died in office on 12 August 1922, but a new Dáil ministry was not formed until 9 September 1922. Griffith served 214 days as president, with a further 28 days between his death and the appointment of W. T. Cosgrave as his successor by the Dáil.

The provisional government of Ireland, established under the terms of the Treaty, overlapped with the later period of ministries of Dáil Éireann. The 1st provisional government was led by Michael Collins as Chairman of the Provisional Government from 16 January 1922 until his death on 22 August 1922. On 25 August 1922, W. T. Cosgrave was appointed as his successor, with the other members of the new provisional government appointed on 30 September. The 1st provisional government lasted 218 days from the appointment of Collins until his death, with three days elapsing until the appointment of Cosgrave as his successor.

The Second Dáil (Irish: An Dara Dáil) was Dáil Éireann as it convened from 16 August 1921 until 8 June 1922. From 1919 to 1922, Dáil Éireann was the revolutionary parliament of the self-proclaimed Irish Republic. The Second Dáil consisted of members elected at the 1921 elections, but with only members of Sinn Féin taking their seats. On 7 January 1922, it ratified the Anglo-Irish Treaty by 64 votes to 57 which ended the War of Independence and led to the establishment of the Irish Free State on 6 December 1922.

The First Dáil (Irish: An Chéad Dáil) was Dáil Éireann as it convened from 1919 to 1921. It was the first meeting of the unicameral parliament of the revolutionary Irish Republic. In the December 1918 election to the Parliament of the United Kingdom, the Irish republican party Sinn Féin won a landslide victory in Ireland. In line with their manifesto, its MPs refused to take their seats, and on 21 January 1919 they founded a separate parliament in Dublin called Dáil Éireann ("Assembly of Ireland"). They declared Irish independence, ratifying the Proclamation of the Irish Republic that had been issued in the 1916 Easter Rising, and adopted a provisional constitution.

Its first meeting happened on the same day as one of the first engagements of what became the Irish War of Independence. Although the Dáil had not authorised any armed action, it became a "symbol of popular resistance and a source of legitimacy for fighting men in the guerrilla war that developed".

The Declaration of Independence (Irish: Forógra na Saoirse, French: Déclaration d'indépendance) was a document adopted by Dáil Éireann, the revolutionary parliament of the Irish Republic, at its first meeting in the Mansion House, Dublin, on 21 January 1919. It followed from the Sinn Féin election manifesto of December 1918. Texts of the declaration were adopted in three languages: Irish, English and French.