Political parties in Northern Ireland can be divided into three distinct categories: unionist parties, such as the Democratic Unionist Party, the Ulster Unionist Party, and other smaller parties such as the Progressive Unionist Party and the United Kingdom Unionist Party; nationalist parties, Sinn Féin and the Social Democratic and Labour Party (SDLP); and cross-community parties such as the Alliance Party and the Northern Ireland Women's Coalition.
The potato would appear to have been introduced into Ireland in the second half of the 17th century, initially as a garden crop. It eventually came to be the main food field crop of the tenant and labouring classes. As a food source, the potato is extremely efficient in terms of energy yielded per unit area of land. The potato is also a good source of many vitamins and minerals, particularly vitamin C (especially when fresh).
The area now known as Northern Ireland has had a diverse history. From serving as the bedrock of Irish resistance in the era of the plantations of Queen Elizabeth and James I in other parts of Ireland, it became itself the subject of major planting of Scottish and English settlers after the Flight of the Earls in 1607 (when the native aristocracy left en masse).
The Irish tradition of folk music and dance is also widely known. In the middle years of the 20th century, as Irish society was attempting to modernise, traditional music fell out of favour to some extent, especially in urban areas. Young people at this time tended to look to Britain and, particularly, the United States as models of progress and jazz and rock and roll became extremely popular. During the 1960s, and inspired by the American folk music movement, there was a revival of interest in the Irish tradition. This revival was inspired by groups like The Dubliners, the Clancy Brothers and Sweeney's Men and individuals like Sean Ó Riada.
Ulster Scots comprises varieties of the Scots language spoken in Northern Ireland. Many claim it has become a separate language, descended from Scots in Scotland, whereas others question whether Scots is a separate language from English at all, or simply a collection of local dialects of Scottish and Northern Ireland Hiberno-English.
With its improved international reputation, Northern Ireland has recently witnessed rising numbers of tourists who come to appreciate the area's unique heritage. Attractions include cultural festivals, musical and artistic traditions, countryside and geographical sites of interest, pubs, welcoming hospitality and sports (especially golf and fishing).
Pub culture, as it is termed, pervades Irish society, across all cultural divides. The term refers to the Irish habit of frequenting public houses (pubs) or bars. Traditional pub culture is concerned with more than just drinking, even though Ireland has a recognised problem with over-consumption of alcohol, with the highest drink consumption in Europe. Per capita alcohol consumption increased by 41% in the period 1989 to 1999. Typically pubs are important meeting places, where people can gather today in the modern Ireland and meet their neighbours and friends in a relaxed atmosphere. Pubs vary widely according to the clientele they serve, and the area they are in. Best known, and loved amongst tourists is the traditional pub, with its tradional Irish music (or "trad music"), tavern-like warmness, and memorabilia filling it.
Much of the Irish calendar still today reflects the old pagan customs, with later Christian traditions also having significant influence. As in other countries, the date for observing Christmas was deliberately chosen to coincide with the winter solstice. Christmas in Ireland has several local traditions, some in no way connected with Christianity. On 6 January, which is known as "The Little Christmas" (An Nollaig Bhéag) or "The Women's Christmas" (Nollaig na mBan), there is a custom of "Wren boys" who call door to door, in times past, with a dead wren.
Ireland is divided into four provinces: Connacht (or Connaught), Leinster, Munster and Ulster. These were further divided into 32 counties for administrative purposes. Six counties remain in the United Kingdom as Northern Ireland following Ireland's partition in 1922 (the remaining 26 forming present-day Republic of Ireland); these county boundaries no longer exist in Northern Ireland for administrative purposes, apart from Fermanagh. In the Republic, the county boundaries are still adhered to for local government, albeit with Tipperary and Dublin subdivided (some cities also have their own administrative regions). For election constituencies, some counties are merged or divided, but constitutionally the boundaries have to be observed. Across Ireland, the 32 counties are still used in sports and in some other cultural areas and retain a strong sense of local identity.
The dialect of English spoken in Northern Ireland shows heavy influence by that of Scotland, thereby giving it a distinct accent compared to other forms of Hiberno-English, along with the use of such Scots words as wee for 'little' and aye for 'yes'. Some jocularly call this version of Hiberno-English phonetically by the name Norn Iron. There are supposedly some minute differences in pronunciation between Protestants and Catholics, the best known of which is the name of the letter h, which Protestants tend to pronounce as "aitch", as in British English, and Catholics tend to pronounce as "haitch", as in Hiberno-English. However, geography is a much more important determinant of dialect than ethnic background. English is by far the most widely spoken language in Northern Ireland.
The culture of the people living on the island of Ireland is far from monolithic. Many notable cultural divides exist between the rural people and city dwellers, between the Catholic and Protestant people of Northern Ireland, between the Irish-speaking people within and without the Gaeltacht regions and the English-speaking majority population, between the settled people and the Travellers, and, increasingly, between new immigrants and the native population.
The Republic of Ireland is a common law jurisdiction. The judiciary consists of the Supreme Court, the High Court and many lower courts established by law. Judges are appointed by the President after being nominated by the Government and can be removed from office only for misbehaviour or incapacity, and then only by resolution of both houses of the Oireachtas. The final court of appeal is the Supreme Court, which consists of the Chief Justice and seven other justices. The Supreme Court has the power of judicial review and may declare to be invalid both laws and acts of the state which are repugnant to the constitution.
Prior to the Government of Ireland Act 1920 the island had existed for centuries as one unified political entity, either on its own (as the Lordship of Ireland, the Kingdom of Ireland) or as part of the United Kingdom of Great Britain and Ireland. Prior to English rule in mediæval times the island was made up of a patchwork of small kingdoms that were people and clan rather than territory-based. At the top of this system was the Ard Ri or High King of Ireland. See Irish States (1171-present).