The region now known as Northern Ireland was historically inhabited by Irish-speaking
Gaels. It consisted of several Gaelic kingdoms within the province of
Ulster. In 1169, Ireland was invaded by
Anglo-Norman forces under the English crown, initiating centuries of foreign dominance. While English authority spread across much of Ireland, Ulster's major Gaelic kingdoms such as the
Uí Néill largely retained their autonomy, with English control limited to parts of the eastern coast. During the
Nine Years' War (1593–1603), an alliance of Gaelic chieftains led by
Hugh Roe O'Donnell and
Hugh O'Neill resisted English rule. Despite early successes and support from Spain, the alliance was ultimately defeated, culminating in the
Flight of the Earls in 1607, when many Ulster nobles fled to
mainland Europe. Their lands were confiscated and colonized by English-speaking Protestant settlers from Britain in the
Plantation of Ulster, establishing a lasting Protestant community with ties to Britain. The
Irish Rebellion of 1641 began in Ulster, driven by demands to end
anti-Catholic discrimination, achieve greater Irish self-governance, and reverse the plantations. The uprising escalated into an ethnic conflict between
Irish Catholics and British Protestant settlers and became part of the wider
Wars of the Three Kingdoms (1639–1653), concluding with the
English Parliamentarian conquest Subsequent Protestant victories in the
Williamite-Jacobite War (1688–1691), including the
Siege of Derry and the
Battle of the Boyne, solidified Anglican Protestant rule in Ireland. These events are still commemorated by some Protestants in Northern Ireland. Many more Scots Protestants migrated to Ulster during the
Scottish famine of the 1690s. Following the Williamite victory, a series of
Penal Laws were enacted by the Anglican Protestant ruling class to suppress Catholicism and, to a lesser extent,
Presbyterianism. These laws aimed to concentrate property and public office in the hands of those aligned with the
Church of Ireland. Between 1717 and 1775, approximately 200,000
Ulster Presbyterians emigrated to the American colonies, where their descendants are known as
Scotch-Irish Americans. In the late 18th century, secretive and militant societies emerged in Ulster, exacerbating sectarian tensions. The
Protestant Peep o' Day Boys and the Catholic Defenders frequently clashed, notably during the
Armagh disturbances, culminating in the
Battle of the Diamond in 1795. This event led to the founding of the
Protestant Orange Order. The Irish Rebellion of 1798 was led by the
Society of United Irishmen, a cross-community republican group founded by Belfast Presbyterians seeking Irish independence. The rebellion was ultimately suppressed, but it highlighted the growing demand for reform. In response, the British government enacted the
Acts of Union 1800, merging the Kingdom of Ireland with Great Britain to form the United Kingdom of Great Britain and Ireland in 1801. This legislative union aimed to quell sectarianism, remove discriminatory laws, and prevent the spread of revolutionary ideas.
Home Rule Crisis in 1912 in opposition to Home Rule By the late 19th century, a large and disciplined cohort of
Irish Nationalist MPs at Westminster committed the
Liberal Party to
"Irish Home Rule"—self-government for Ireland, within the United Kingdom. This was bitterly opposed by
Irish Unionists, most of whom were Protestants, who feared an Irish devolved government dominated by Irish nationalists and Catholics. The
Government of Ireland Bill 1886 and
Government of Ireland Bill 1893 were defeated. However, Home Rule became a near-certainty in 1912 after the
Government of Ireland Act 1914 was first introduced. The Liberal government was dependent on Nationalist support, and the
Parliament Act 1911 prevented the House of Lords from blocking the bill indefinitely. In response, unionists vowed to prevent Irish Home Rule, from
Conservative and Unionist Party leaders such as
Bonar Law and Dublin-based barrister
Edward Carson to militant working class unionists in Ireland. This sparked the
Home Rule Crisis. In September 1912, more than 500,000 unionists signed the
Ulster Covenant, pledging to oppose Home Rule by any means and to defy any Irish government. In 1914, unionists
smuggled thousands of rifles and rounds of ammunition from
Imperial Germany for use by the
Ulster Volunteers (UVF), a paramilitary organisation formed to oppose Home Rule. Irish nationalists had also formed a paramilitary organisation, the
Irish Volunteers. It sought to ensure Home Rule was implemented, and it
smuggled its own weapons into Ireland a few months after the Ulster Volunteers. Ireland seemed to be on the brink of civil war. Unionists were in a minority in Ireland as a whole, but a majority in the province of
Ulster, especially the counties
Antrim,
Down,
Armagh and
Londonderry. Unionists argued that if Home Rule could not be stopped then all or part of Ulster should be excluded from it. In May 1914, the UK Government introduced an Amending Bill to allow for 'Ulster' to be excluded from Home Rule. There was then debate over how much of Ulster should be excluded and for how long. Some Ulster unionists were willing to tolerate the 'loss' of some mainly-Catholic areas of the province. The crisis was interrupted by the outbreak of the
First World War in August 1914, and
Ireland's involvement in it. The UK government abandoned the Amending Bill, and instead rushed through a new bill, the
Suspensory Act 1914, suspending Home Rule for the duration of the war, with the exclusion of Ulster still to be decided.
Partition of Ireland By the end of the war (during which the 1916
Easter Rising had taken place), most Irish nationalists now wanted full independence rather than home rule. In September 1919, British Prime Minister
David Lloyd George tasked a committee with planning another home rule bill. Headed by
English unionist politician
Walter Long, it was known as the 'Long Committee'. It decided that two devolved governments should be established—one for the nine counties of Ulster and one for the rest of Ireland—together with a
Council of Ireland for the "encouragement of Irish unity". Most Ulster unionists wanted the territory of the Ulster government to be reduced to six counties so that it would have a larger Protestant unionist majority, which they believed would guarantee its longevity. The six counties of
Antrim,
Down,
Armagh,
Londonderry,
Tyrone and
Fermanagh comprised the maximum area unionists believed they could dominate. The area that was to become Northern Ireland included counties Fermanagh and Tyrone, even though they had nationalist majorities in the
1918 Irish general election. Events overtook the government. In the 1918 Irish general election, the pro-independence
Sinn Féin party won the overwhelming majority of Irish seats. Sinn Féin's elected members boycotted the British parliament and founded a separate Irish parliament (
Dáil Éireann),
declaring an independent Irish Republic covering the whole island. Many
Irish republicans blamed the British establishment for the sectarian divisions in Ireland, and believed that Ulster unionism would fade once British rule was ended. The British authorities outlawed the Dáil in September 1919, and a guerrilla conflict developed as the
Irish Republican Army (IRA) began attacking British forces. This became known as the
Irish War of Independence. Meanwhile, the
Government of Ireland Act 1920 passed through the British parliament in 1920. It would divide Ireland into two self-governing UK territories: the six northeastern counties (Northern Ireland) being ruled from
Belfast, and the other twenty-six counties (
Southern Ireland) being ruled from
Dublin. Both would have a shared
Lord Lieutenant of Ireland, who would appoint both governments and a
Council of Ireland, which the UK government intended to evolve into an all-Ireland parliament. The Act received
royal assent that December, becoming the Government of Ireland Act 1920. It came into force on 3 May 1921,
partitioning Ireland and creating Northern Ireland. the
1921 Irish elections were held on 24 May, in which unionists won most seats in the Northern Ireland parliament. It first met on 7 June and formed its
first devolved government, headed by Ulster Unionist Party leader
James Craig. Irish nationalist members refused to attend. King George V addressed the ceremonial opening of the Northern parliament on 22 June. A truce between British forces and the IRA was established on 11 July 1921, ending the fighting in most of Ireland. However, communal violence continued in Belfast, and in 1922 the IRA launched a guerrilla offensive along the new
Irish border. The
Anglo-Irish Treaty was signed between representatives of the governments of the UK and the
Irish Republic on 6 December 1921, laying out the process for the creation of the
Irish Free State. Under the terms of the treaty, Northern Ireland would become part of the Free State unless its government opted out by presenting an address to the king, although in practice partition remained in place. used between 1924 and 1973 The Irish Free State came into existence on 6 December 1922, and on the following day, the
Parliament of Northern Ireland resolved to exercise its right to opt out of the Free State by making an address to King
George V. The text of the address was: Shortly afterwards, the
Irish Boundary Commission was established to decide on the border between the Irish Free State and Northern Ireland. Owing to the outbreak of the
Irish Civil War, the work of the commission was delayed until 1925. The Free State government and Irish nationalists hoped for a large transfer of territory to the Free State, as many border areas had nationalist majorities. Many believed this would leave the remaining Northern Ireland territory too small to be viable. However, the commission's final report recommended only small transfers of territory, and in both directions. The Free State, Northern Ireland, and UK governments agreed to suppress the report and accept the
status quo, while the UK government agreed that the Free State would no longer have to pay a share of the UK national debt.
Established government and boundaries Northern Ireland's border was drawn to give it "a decisive Protestant majority". At the time of its creation, Northern Ireland's population was two-thirds Protestant and one-third Catholic. For its first fifty years, Northern Ireland had an unbroken series of
Ulster Unionist Party governments. Every prime minister and almost every minister of these governments were members of the
Orange Order, as were all but 11 of the 149
Ulster Unionist Party (UUP) MPs elected during this time. Almost all judges and magistrates were Protestant, many of them closely associated with the UUP. Northern Ireland's new police force was the
Royal Ulster Constabulary (RUC), which succeeded the
Royal Irish Constabulary (RIC). It too was almost wholly Protestant and lacked operational independence, responding to directions from government ministers. The RUC and the reserve
Ulster Special Constabulary (USC) were militarized police forces due to the perceived threat of militant republicanism. In 1936 the British advocacy group - the
National Council for Civil Liberties characterised the USC as "nothing but the organised army of the Unionist party". They "had at their disposal the
Special Powers Act, a sweeping piece of legislation which allowed arrests without warrant, internment without trial, unlimited search powers, and bans on meetings and publications". This 1922 Act was made permanent in 1933 and was not repealed until 1973. The
Nationalist Party was the main political party in opposition to the UUP governments. However, its elected members often protested by
abstaining from the Northern Ireland parliament, and many nationalists did not vote in parliamentary elections. The Local Government Act (Northern Ireland) of 1922 allowed for the altering of municipal and rural boundaries. This Act led to the
gerrymandering of local election boundaries in the Nationalists majority cities of Derry City, Enniskillen, Omagh, Armagh and many other towns and rural districts. That action ensured Unionist control over local councils in areas where they were a minority. The UUP governments, and some UUP-dominated local authorities, discriminated against the Catholic and Irish nationalist minority; especially by the gerrymandering of local electoral boundaries, the allocation of public housing, public sector employment, and policing, showing "a consistent and irrefutable pattern of deliberate discrimination against Catholics". Many Catholics/Nationalists saw the gerrymandered local electoral boundaries and the abolishing of
proportional representation as proof of government-sponsored discrimination. Until 1969 a system was in place called
plural voting which was a practice whereby one person might be able to vote multiple times in an election. Property and business owners could vote both in the constituency where their property lay and that in which they lived, if the two were different. This system often resulted in one person being able to cast multiple votes. Decades later, UUP
First Minister of Northern Ireland,
David Trimble, said that Northern Ireland under the UUP had been a "cold house" for Catholics.
Offer of Irish unity ) in 1932 During
World War II, recruitment to the British military was noticeably lower than the high levels reached during World War I. In June 1940, to encourage the
neutral Irish state to join with the
Allies, British Prime Minister
Winston Churchill indicated to Taoiseach
Éamon de Valera that the British government would encourage Irish unity, but believing that Churchill could not deliver, de Valera declined the offer. The British did not inform the government of Northern Ireland that they had made the offer to the Dublin government, and de Valera's rejection was not publicised until 1970. Belfast was a key industrial city in the UK's war effort, producing ships, tanks, aircraft, and munitions. The unemployment that had been so persistent in the 1930s disappeared, and labour shortages appeared, prompting migration from the Free State. The city was thinly defended, and had only 24 anti-aircraft guns. Richard
Dawson Bates, the Minister for Home Affairs, had prepared too late, assuming that Belfast was far enough away to be safe. The city's fire brigade was inadequate, and as the Northern Ireland government had been reluctant to spend money on air raid shelters, it only started to build them after
the Blitz in London during the autumn of 1940. There were no searchlights in the city, which made shooting down enemy bombers more difficult. In April–May 1941, the
Belfast Blitz began when the
Luftwaffe launched a series of raids that were the most deadly seen outside London. Working-class areas in the north and east of the city were particularly hard hit, and over 1,000 people were killed and hundreds were seriously injured. Tens of thousands of people fled the city in fear of future attacks. In the final raid,
Luftwaffe bombs inflicted extensive damage to the docks and the
Harland & Wolff shipyard, closing it for six months. Half of the city's houses had been destroyed, highlighting the terrible slum conditions in Belfast, and about £20 million worth of damage was caused. The Northern Ireland government was criticised heavily for its lack of preparation, and Northern Ireland Prime Minister
J. M. Andrews resigned. There was a major munitions strike in 1944. The
Ireland Act 1949 gave the first legal guarantee that the region would not cease to be part of the United Kingdom without the consent of the
Parliament of Northern Ireland. From 1956 to 1962, the
Irish Republican Army (IRA) carried out a limited guerrilla campaign in border areas of Northern Ireland, called the
Border Campaign. It aimed to destabilize Northern Ireland and bring about an end to partition but failed. In 1965, Northern Ireland's Prime Minister
Terence O'Neill met the Taoiseach,
Seán Lemass. It was the first meeting between the two heads of government since partition.
The Troubles The Troubles, which started in the late 1960s, consisted of about 30 years of recurring acts of intense violence during which 3,254 people were killed with over 50,000 casualties. From 1969 to 2003 there were over 36,900 shooting incidents and over 16,200 bombings or attempted bombings associated with The Troubles. From 1967 to 1972 the
Northern Ireland Civil Rights Association (NICRA), which modelled itself on the US civil rights movement, led a campaign of
civil resistance to anti-Catholic discrimination in housing, employment, policing, and electoral procedures. The franchise for local government elections included only rate-payers and their spouses, and so excluded over a quarter of the electorate. While the majority of disenfranchised electors were Protestant, Catholics were over-represented since they were poorer and had more adults still living in the family home. NICRA's campaign, seen by many unionists as an
Irish republican front, and the violent reaction to it proved to be a precursor to a more violent period. As early as 1969, armed campaigns of paramilitary groups began, including the
Provisional IRA campaign of 1969–1997 which was aimed at the end of British rule in Northern Ireland and the creation of a
United Ireland, and the
Ulster Volunteer Force, formed in 1966 in response to the perceived erosion of both the British character and unionist domination of Northern Ireland. The state security forces – the
British Army and the police (the
Royal Ulster Constabulary) – were also involved in the violence. The UK Government's position is that its forces were neutral in the conflict, trying to uphold law and order in Northern Ireland and the right of the people of Northern Ireland to democratic self-determination. Republicans regarded the state forces as
combatants in the conflict, pointing to the
collusion between the state forces and the loyalist paramilitaries as proof of this. The "Ballast" investigation by the
Police Ombudsman for Northern Ireland has confirmed that British forces, and in particular the RUC, did collude with loyalist paramilitaries, were involved in murder, and did obstruct the course of justice when such claims had been investigated, although the extent to which such collusion occurred is still disputed. As a consequence of the worsening security situation, the autonomous regional government for Northern Ireland was suspended in 1972. Alongside the violence, there was a political deadlock between the major political parties in Northern Ireland, including those who condemned the violence, over the future status of Northern Ireland and the form of government there should be within Northern Ireland. In 1973,
Northern Ireland held a referendum to determine if it should remain in the United Kingdom, or be part of a united Ireland. The vote went heavily in favour (98.9%) of maintaining the status quo. Approximately 57.5% of the total electorate voted in support, but only 1% of Catholics voted following a boycott organised by the
Social Democratic and Labour Party (SDLP). The deaths of 10 men during the
1981 Irish hunger strike brought worldwide attention to the Republican prisoners being held in prison (
HM Prison Maze) in Northern Ireland.
Peace process , over the
River Foyle The Troubles were brought to an uneasy end by a peace process that included the declaration of ceasefires by most paramilitary organisations and the complete decommissioning of their weapons, the reform of the police, and the corresponding withdrawal of army troops from the streets and sensitive border areas such as South Armagh and
Fermanagh, as agreed by the signatories to the
Good Friday Agreement (also known as the "Belfast Agreement"). This reiterated the long-held British position, which had never before been fully acknowledged by successive Irish governments, that Northern Ireland will remain within the United Kingdom until a majority of voters in Northern Ireland decides otherwise. The
Constitution of Ireland was amended in 1999 to remove a claim of the "Irish nation" to sovereignty over the entire island (in Article 2). The new
Articles 2 and 3, added to the Constitution to replace the earlier articles, implicitly acknowledge that the status of Northern Ireland, and its relationships within the rest of the United Kingdom and with the Republic of Ireland, would only be changed with the agreement of a majority of voters in each jurisdiction. This aspect was also central to the Belfast Agreement which was signed in 1998 and ratified by referendums held simultaneously in both Northern Ireland and the Republic. At the same time, the UK Government recognised for the first time, as part of the prospective, the so-called "Irish dimension": the principle that the people of the island of Ireland as a whole have the right, without any outside interference, to solve the issues between North and South by mutual consent. The latter statement was key to winning support for the agreement from nationalists. It established a devolved power-sharing government, the
Northern Ireland Assembly, located on the
Stormont Estate, which must consist of both unionist and nationalist parties. These institutions were suspended by the
UK Government in 2002 after
Police Service of Northern Ireland (PSNI) allegations of spying by people working for Sinn Féin at the Assembly (
Stormontgate). The resulting case against the accused Sinn Féin member collapsed.
Ian Paisley and deputy First Minister
Martin McGuinness, signs the Joint Agreement with
First Minister of Scotland,
Alex Salmond, May 2008 On 28 July 2005, the Provisional IRA declared an end to its campaign and has since decommissioned what is thought to be all of its
arsenal. This final act of decommissioning was performed under the watch of the
Independent International Commission on Decommissioning (IICD) and two external church witnesses. Many unionists, however, remained sceptical. The IICD later confirmed that the main loyalist paramilitary groups, the
Ulster Defence Association, UVF, and the
Red Hand Commando, had decommissioned what is thought to be all of their arsenals, witnessed by former archbishop
Robin Eames and a former top civil servant. Politicians elected to the Assembly at the
2003 Assembly election were called together on 15 May 2006 under the Northern Ireland Act 2006 to elect a
First Minister and deputy First Minister of Northern Ireland and choose the members of an Executive (before 25 November 2006) as a preliminary step to the restoration of devolved government. Following the
election on 7 March 2007, the devolved government returned on 8 May 2007 with
Democratic Unionist Party (DUP) leader
Ian Paisley and Sinn Féin deputy leader
Martin McGuinness taking office as First Minister and deputy First Minister, respectively. In its
white paper on
Brexit the United Kingdom government reiterated its commitment to the Belfast Agreement. Concerning Northern Ireland's status, it said that the UK Government's "clearly-stated preference is to retain Northern Ireland's current constitutional position: as part of the UK, but with strong links to Ireland".
Executive crisis 2022–2024 ,
Humza Yousaf, 2022 On 3 February 2022,
Paul Givan resigned as first minister, which automatically resigned
Michelle O'Neill as deputy first minister and collapsed the executive of Northern Ireland. Following the
2022 Assembly election,
Sinn Féin won the largest number of seats with 27 seats, becoming the largest political party in the
Northern Ireland Assembly. Their unionist counterparts, the
Democratic Unionist Party (DUP) came second with 25 seats. As a result of being the largest party, this put O'Neill in line to become the First Minister of Northern Ireland and the DUP leader to become the deputy First Minister of Northern Ireland. However, O'Neill did not take up the position until February 2024 because, as part of its opposition to the
Northern Ireland Protocol, the DUP refused to nominate a deputy First minister and there was therefore no functioning executive of Northern Ireland. On 30 January 2024, leader of the DUP
Jeffrey Donaldson announced that the DUP would restore an executive government on the condition that new legislation was passed by the UK House of Commons. This paved the way for O'Neill, as nationalist leader to be sworn in as
First Minister of Northern Ireland. O'Neill assumed office on 3 February 2024, becoming the first ever Irish nationalist, republican or Catholic to hold that position. In her
Stormont acceptance speech, she again broke with republican tradition, by using the term, Northern Ireland. She pledged in her speech to represent all and to show respect to the
royal family. On 5 February, O'Neill held meetings with
Rishi Sunak,
Chris Heaton-Harris,
Leo Varadkar and ministers of the
Northern Ireland Executive. High on the agenda is the request for additional financial support for the Northern Ireland government in excess of the £3.3 billion package already pledged from the
HM Treasury. In November 2024, O'Neill became the first senior Sinn Féin figure to take part in an official
Remembrance Sunday ceremony, laying a laurel wreath at the
Belfast Cenotaph at
City Hall. A banner was subsequently hung outside her office brandishing O'Neill a "traitor"; police investigated the incident as "hate-motivated". ==Politics==