Irish diaspora in the context of "Montserrat"

A diaspora (/daɪˈæspərə/ dy-ASP-ər-ə) is a population that is scattered across regions which are separate from its geographic place of origin. The word is used in reference to people who identify with a specific geographic location, but currently reside elsewhere.

Notable diasporic populations include the Jewish diaspora formed after the Babylonian exile; Romani from the Indian subcontinent; Assyrian diaspora following the Assyrian genocide; Greeks that fled or were displaced following the fall of Constantinople and the later Greek genocide as well as the Istanbul pogroms; Anglo-Saxons (primarily to the Byzantine Empire) after the Norman Conquest of England; the Chinese diaspora and Indian diaspora who left their homelands during the 19th and 20th centuries; the Irish diaspora after the Great Famine; the Scottish diaspora that developed on a large scale after the Highland and Lowland Clearances; the Italian diaspora, the Mexican diaspora; the Circassian diaspora in the aftermath of the Circassian genocide; the Armenian diaspora following the Armenian genocide; the Palestinian diaspora; the Lebanese diaspora due to the Famine of Mount Lebanon and to a lesser extent the Lebanese civil war; Syrians due to the Syrian civil war; and the Iranian diaspora which grew from half a million to 3.8 million between the 1979 revolution and 2019.

Irish Catholics (Irish: Caitlicigh na hÉireann) are an ethnoreligious group native to Ireland whose members are both Catholic and Irish. The diaspora and the descendants of Irish Catholics includes millions of Americans, Canadians and Australians. In countries like the United States, Canada and Australia, many Catholics descend from Irish immigrants/migrants who passed down their faith.

The population of Ireland in 2021 was approximately seven million with 1,903,100 in Northern Ireland and 5,123,536 in the Republic of Ireland. In the 2022 census the population of the Republic of Ireland eclipsed five million for the first time since the 1851 census. The population of Ireland in 2024 was approximately 7.2 million (5.35 million in the Republic of Ireland and 1.91 million in Northern Ireland). Although these figures demonstrate significant growth over recent years, the population of Ireland remains below the record high of 8,175,124 in the 1841 census.

Between 1700 and 1840, Ireland experienced rapid population growth, rising from less than three million in 1700 to over eight million by the 1841 census. In 1851, as the Great Famine was ending, the population of Ireland had dropped to 6.5 million people. The Famine and the resulting Irish diaspora had a dramatic effect on population; by 1891, Ireland's population had slipped under five million and by 1931, it had dropped to just over four million. It stayed around this level until the 1960s, when the population began to rise again.

The Great Famine, also known as the Great Hunger (Irish: an Gorta Mór [ənˠ ˈɡɔɾˠt̪ˠə ˈmˠoːɾˠ]), the Famine and the Irish Potato Famine, was a period of mass starvation and disease in Ireland lasting from 1845 to 1852 that constituted a historical social crisis and had a major impact on Irish society and history as a whole. The most severely affected areas were in the western and southern parts of Ireland—where the Irish language was dominant—hence the period was contemporaneously known in Irish as an Drochshaol, which literally translates to "the bad life" and loosely translates to "the hard times".

The worst year of the famine was 1847, which became known as "Black '47". The population of Ireland on the eve of the famine was about 8.5 million; by 1901, it was just 4.4 million. During the Great Hunger, roughly one million people died and over one million more fled the country, causing the country's population to fall by 20–25% between 1841 and 1871, with some towns' populations falling by as much as 67%. Between 1845 and 1855, at least 2.1 million people left Ireland, primarily on packet ships but also on steamboats and barques—one of the greatest exoduses from a single island in history.

Celtic diaspora may refer to any of the following diasporas of Celtic people:

• Cornish diaspora
• Irish diaspora
• Scottish diaspora
• Welsh people § Welsh diaspora

The Provisional Irish Republican Army (Provisional IRA), officially known as the Irish Republican Army (IRA; Irish: Óglaigh na hÉireann) and informally known as the Provos, was an Irish republican paramilitary force that sought to end British rule in Northern Ireland, facilitate Irish reunification and bring about an independent republic encompassing all of Ireland. It was the most active republican paramilitary group during the Troubles. It argued that the all-island Irish Republic continued to exist, and it saw itself as that state's army, the sole legitimate successor to the original IRA from the Irish War of Independence. It was designated a terrorist organisation in the United Kingdom and an unlawful organisation in the Republic of Ireland, both of whose authority it rejected.

The Provisional IRA emerged in December 1969, due to a split within the previous incarnation of the IRA and the broader Irish republican movement. It was initially the minority faction in the split compared to the Official IRA but became the dominant faction by 1972. The Troubles had begun shortly before when a largely Catholic, nonviolent civil rights campaign was met with violence from both Ulster loyalists and the Royal Ulster Constabulary (RUC), culminating in the August 1969 riots and deployment of British soldiers. The IRA initially focused on defence of Catholic areas, but it began an offensive campaign in 1970 that was aided by external sources, including Irish diaspora communities within the Anglosphere, and the Palestine Liberation Organization and Libyan leader Muammar Gaddafi. It used guerrilla tactics against the British Army and RUC in both rural and urban areas, and carried out a bombing campaign in Northern Ireland and England against military, political and economic targets, and British military targets in mainland Europe. They also targeted civilian contractors to the British security forces. The IRA's armed campaign, primarily in Northern Ireland but also in England and mainland Europe, killed over 1,700 people, including roughly 1,000 members of the British security forces and 500–644 civilians.