Instruct: Given a question, retrieve relevant passages that can help answer the question.
Query: How large is the Irish diaspora?
After 1840, emigration from Ireland became a massive, relentless, and efficiently managed national enterprise. In 1890 40% of Irish-born people were living abroad. By the 21st century, an estimated 80 million people worldwide claimed some Irish descent, which includes more than 36 million Americans who claim Irish as their primary ethnicity.
As recently as the second half of the nineteenth century, the majority of Irish emigrants spoke Irish as their first language. This had social and cultural consequences for the cultivation of the language abroad, including innovations in journalism. The language continues to be cultivated abroad by a small minority as a literary and social medium. 
The Irish People are largely assimilated in most countries outside Ireland
In the 2016 Irish census 78.3% of the population identified as Catholic in Ireland; numbering approximately 3.7 million people. Unlike Catholics in the United States, Ireland has seen a significant decline from the 84.2% who identified as Catholic in the 2011 census.
The Irish Exiles is a rugby union representative team featuring players selected from the Irish diaspora, mainly though not exclusively based in Great Britain. The team was established in 1989 by Tom Kiernan. It was officially recognised by the Irish Rugby Football Union and during the 1990s was effectively a fifth provincial team along with Leinster, Ulster, Munster and Connacht. Between 1992–93 and 1995–96 the Irish Exiles entered the IRFU Interprovincial Championship. The Irish Exiles also acts as an academy system for players from the Irish diaspora who wish to play for the men's national team and other IRFU national teams including the women's national team, the men's sevens team and the women's sevens team.
The Irish were the most influential ethnic group regarding the initial waves of immigration to the United States and of Americanization. Newly arrived immigrants in American cities had a hard time avoiding the Irish. There was no way around the Irish for the newcomers, as the Irish were present in every aspect of American working-class society. Between 1840 and 1890, more than 3,000,000 Irish immigrants had entered the United States, and by 1900, about 5,000,000 of their first and second generations were settled in. There were more Irish living in the United States than in Ireland. Irish Americans played a major role in the newcomer's Americanization. In other words, identity in the United States emerged from dynamic relationships among ethnic groups, as well as from particular groups' own distinct history and traditions.
Those who stayed behind and tended to their farmlands suffered the consequences of the widespread crop failures brought about as a result of long periods of drought and diseases such as the cholera epidemic and the potato fungus which caused the Great Irish Famine of 1840. Mass starvation was widespread in Europe. Specifically, in Ireland, the Irish Potato Famine killed over one million people and created nearly two million refugees. These refugees went to Great Britain, the United States, Australia, Canada, New Zealand, and, of course, the Caribbean. One of the islands that many Irish families emigrated in large numbers to throughout this period continued to be Irish-friendly Puerto Rico. Moreover, being a Spanish colony, the island had a primarily Roman Catholic population which appealed to the Irish immigrants, as opposed to the Protestant majorities of most of the colonies of the British Empire and the United States at the time that were openly hostile to Irish immigration.
While the famine was responsible for a significant increase in emigration from Ireland, of anywhere from 45% to nearly 85% depending on the year and the county, it was not the sole cause. The beginning of mass emigration from Ireland can be traced to the mid-18th century, when some 250,000 people left Ireland over a period of 50 years to settle in the New World. Irish economist Cormac Ó Gráda estimates that between 1 million and 1.5 million people emigrated during the 30 years between 1815 (when Napoleon was defeated in Waterloo) and 1845 (when the Great Famine began). However, during the worst of the famine, emigration reached somewhere around 250,000 in one year alone, with western Ireland seeing the most emigrants.
Upon arrival in North America, these migrants at first usually identified simply as Irish, without the qualifier "Scotch". It was not until a century later, following the surge in Irish immigration after the Great Irish Famine of the 1840s, that the descendants of the earlier arrivals began to commonly call themselves Scotch-Irish to distinguish themselves from the newer, predominantly Catholic and poor immigrants; these largely had no Scottish ancestry. At first, the two groups had little interaction in America, as the Scots-Irish had become settled decades earlier, primarily in the backcountry of the Appalachian region. The new wave of Catholic Irish settled primarily in port cities such as Boston, New York, Charleston, Chicago, Memphis and New Orleans, where large immigrant communities formed and there were an increasing number of jobs. Many of the new Irish migrants also went to the interior in the 19th century, attracted to jobs on large-scale infrastructure projects such as canals and railroads.
Christianity is the largest religion in the Republic of Ireland based on baptisms. Irish Christianity is dominated by the Catholic Church, and Christianity as a whole accounts for 82.3% of the Irish population. Most churches are organized on an all-Ireland basis which includes both Northern Ireland and the Republic of Ireland.
Irish travellers have traditionally adopted a very particular attitude to the Catholic Church, with a focus on figures such as "healing priests". More generally a tradition of visions continues, often outside of Church sanction.
If all these motorways are opened, Ireland will have a ratio of 1 km of motorway to every 4,277.56 people (assuming a population of 4.5 million) by 2015. This compares to a current ratio of 1 km of motorway to every 6,017.32 people in Belgium. Although welcomed by many people, the construction of new motorways in Ireland has not been without controversy or opposition. In particular, the construction of the M3 motorway through the archaeologically significant Tara-Skryne valley (or Gabhra) near Tara has led to protests and calls for protection of its landscape from many, including Pat Wallace, Director of the National Museum of Ireland, and other prominent figures in Ireland and other countries. The Smithsonian Institution in the US has placed the Hill of Tara archaeological complex on its list of endangered cultural treasures as a result of the M3's construction.
Dublin (; ) is the capital of, and largest city in, Ireland. It is on the east coast of Ireland, in the province of Leinster, at the mouth of the River Liffey, and is bordered on the south by the Wicklow mountains. It has an urban area population of 1,173,179, while the population of the Dublin Region (formerly County Dublin), , was 1,347,359, and the population of the Greater Dublin area was 1,904,806.
According to the latest data from the CSO there are just over 535,000 people aged 65 or over living in the Republic of Ireland. In Northern Ireland there are 249,000 people this age and older. Looking to the future a large increase is expected in the number of older people on both parts of the island. It is now predicted that by 2041 there will be 1.89 million people over 65 living on the island This means that ageing is becoming a major issue for all of use and especially for those who make policy and provide services for older people.
The first waves of Irish immigrants took place between 1763 and 1880. when ten thousand Irish immigrants arrived on the Island. From 1800 to 1850, "10,000 immigrants from every county in Ireland" had settled in Prince Edward Island and represented 25% of the Island population by 1850.
About 400 bird species have been recorded in Ireland. Many of these species are migratory. There are Arctic birds, which come in the winter, and birds such as the swallow, which come from Africa in the summer to breed. Many birds which are common residents in Britain and continental Europe are rare or unusual in Ireland, examples include the tawny owl, willow tit, marsh tit, nuthatch, and all woodpecker species except the recently established great spotted woodpecker. These are birds which do not move great distances and their absence may be due to Ireland's early isolation, but also Ireland's mild weather means early breeding and choice of best habitats which gives residents an advantage over visitors.
A small minority of historians regard the Irish Potato Famine (1845–1852) as an example of genocide. During the famine approximately 1 million people died and a million more emigrated from Ireland, causing the island's population to fall by between 20% and 25%. The proximate cause of famine was a potato disease commonly known as potato blight. Although blight ravaged potato crops throughout Europe during the 1840s, the impact and human cost in Irelandwhere one-third of the population was entirely dependent on the potato for foodwas exacerbated by a host of political, social, and economic factors that remain the subject of historical debate.
The Great Famine (, ), or the Great Hunger, was a period in Ireland between 1845 and 1849 of mass starvation, disease, and emigration. With the most severely affected areas in the west and south of Ireland, where the Irish language was primarily spoken, the period was contemporaneously known as , loosely translated as the "hard times" (or literally, "The Bad Life"). The worst year of the period, that of "Black 47", is known as . During the famine, about one million people died and a million more emigrated from Ireland, causing the island's population to fall by between 20% and 25%.
In terms of size and area, it is the largest county in Ulster and the fourth-largest county in all of Ireland. Uniquely, County Donegal shares a small border with only one other county in the Republic of Ireland – County Leitrim. The greater part of its land border is shared with three counties of Northern Ireland: County Londonderry, County Tyrone and County Fermanagh. This geographic isolation from the rest of the Republic has led to Donegal people maintaining a distinct cultural identity and has been used to market the county with the slogan "Up here it's different". While Lifford is the county town, Letterkenny is by far the largest town in the county with a population of 19,588. Letterkenny and the nearby city of Derry form the main economic axis of the northwest of Ireland. Indeed, what became the City of Derry was officially part of County Donegal up until 1610.
The earliest recorded Viking raids in Ireland occurred in 795. Over time, these raids increased in intensity, and they overwintered in Ireland for the first time in 840–841. Later in 841 a longphort was constructed at Áth Cliath (Irish for "hurdled ford"), a site which would later develop into the city of Dublin. Longphorts were also established at other sites around Ireland, some of which developed into larger Viking settlements over time. The Viking population in Ireland was boosted in 851 with the arrival of a large group known as "dark foreigners" – a contentious term usually considered to mean the newly arrived Vikings, as opposed to the "fair foreigners", i.e. the Viking population which was resident in arrival prior to this influx. A kingdom in Viking Scotland was established by the mid ninth-century, and it exerted control over some of the Vikings in Ireland. By 853 a separate kingdom of Dublin had been set up which claimed control over all the Vikings in Ireland.
The earliest recorded Viking raids in Ireland occurred in 795. Over time, these raids increased in intensity, and they overwintered in Ireland for the first time in 840–841. Later in 841 a longphort was constructed at Áth Cliath (Irish for "hurdled ford"), a site which would later develop into the city of Dublin. Longphorts were also established at other sites around Ireland, some of which developed into larger Viking settlements over time. The Viking population in Ireland was boosted in 851 with the arrival of a large group known as "dark foreigners" – a contentious term usually considered to mean the newly arrived Vikings, as opposed to the "fair foreigners", i.e. the Viking population which was resident in arrival prior to this influx. A kingdom in Viking Scotland was established by the mid ninth-century, and it exerted control over some of the Vikings in Ireland. By 853 a separate kingdom of Dublin had been set up which claimed control over all the Vikings in Ireland.
The earliest recorded Viking raids in Ireland occurred in 795. Over time, these raids increased in intensity, and they overwintered in Ireland for the first time in 840–841. In 841 a longphort was constructed at (Irish for "hurdled ford"), a site which would later develop into the city of Dublin. Longphorts were also established at other sites around Ireland, some of which developed into larger Viking settlements over time. The Viking population in Ireland was boosted in 851 with the arrival of a large group known as "dark foreigners" – a contentious term used to refer to the newly arrived Vikings, as opposed to the "fair foreigners", i.e. the Viking population which was resident in arrival prior to this influx. A kingdom in Viking Scotland was established by the mid ninth-century, and it exerted control over some of the Vikings in Ireland. By 853 a separate kingdom of Dublin had been set up which claimed control over all the Vikings in Ireland.
The predominant religion in the Republic of Ireland is Christianity, with the largest church being the Roman Catholic Church. The Irish constitution says that the state may not endorse any particular religion and guarantees freedom of religion.
In 1916 the Easter Rising organised by the IRB and carried out by members of the Irish Volunteers, the socialist Irish Citizen Army of James Connolly and 200 women from Cumann na mBan succeeded in turning public opinion against the British establishment after the execution of the leaders by British authorities. It also eclipsed the home rule movement by bringing physical force republicanism back to the forefront of Irish politics. In 1922, after the Irish War of Independence most of Ireland seceded from the United Kingdom to become the independent Irish Free State but under the Anglo-Irish Treaty the six northeastern counties, known as Northern Ireland, remained within the United Kingdom, creating the partition of Ireland. The treaty was opposed by many; their opposition led to the outbreak of the Irish Civil War, in which pro-treaty or Free State forces proved victorious. The history of Northern Ireland has since been dominated by the division of society along sectarian faultlines and conflict between (mainly Catholic) Irish nationalists and (mainly Protestant) unionists. These divisions erupted into the Troubles in the late 1960s, after civil rights marches were met with opposition by authorities. The violence escalated after the deployment of the British Army to restore order led to clashes with nationalist communities. The violence continued for 28 years until an uneasy, but largely successful peace was finally achieved with the Good Friday Agreement in 1998.
The term Irish diaspora is open to many interpretations. The diaspora, broadly interpreted, contains all those known to have Irish ancestors, i.e., over 100 million people, which is more than fifteen times the population of the island of Ireland, which was about 4.6 million in 2011. It has been argued the idea of an Irish diaspora, as distinct from the old identification of Irishness with Ireland itself, was influenced by the perceived advent of global mobility and modernity. Irishness could now be identified with dispersed individuals and groups of Irish descent. But many of those individuals were the product of complex ethnic intermarriage in America and elsewhere, complicating the idea of a single line of descent. "Irishness" might then rely primarily on individual identification with an Irish diaspora.
About 10% of the population of Saskatchewan during 1850–1930 were Irish-born or of Irish origin. Cottrell (1999) examines the social, economic, political, religious, and ideological impact of the Irish diaspora on pioneer society and suggests that both individually and collectively, the Irish were a relatively privileged group. The most visible manifestations of intergenerational Irish ethnicity - the Catholic Church and the Orange Order - served as vehicles for recreating Irish culture on the prairies and as forums for ethnic fusion, which integrated people of Irish origin with settlers of other nationalities. The Irish were thus a vital force for cohesion in an ethnically diverse frontier society, but also a source of major tension with elements that did not share their vision of how the province of Saskatchewan should evolve.
A specific 19th-century example is the Irish diaspora, beginning in the mid-19th century and brought about by "An Gorta Mór" or "the Great Hunger" of the Irish Famine. An estimated 45% to 85% of Ireland's population emigrated to areas including Britain, the United States of America, Canada, Argentina, Australia and New Zealand. The size of the Irish diaspora is demonstrated by the number of people around the world who claim Irish ancestry; some sources put the figure at 80 to 100 million.
The Diaspora population of Ireland also got a fresh start on the islands of New Zealand during the later half of the 19th century. The ideology of striking it rich in the gold mines caused many Irish people to flock to the docks; risking their lives on the long voyage to potential freedom and more importantly self-sufficiency. Most famous places including both Gabriel's Gully and Otago are examples of mining sites which, with the funding of large companies, allowed for the creation of wages and the appearance of mining towns. Women found jobs as housemaids cleaning the shacks of the single men at work thereby providing a second income to the Irish family household. The subsequent money accumulated with regards to this would allow for chain migration for the rest of the family left behind.