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).
The Anglo-Irish Treaty was narrowly ratified by the Dáil in December 1921 but was rejected a large minority, resulting in the Irish Civil War which lasted until 1923. In 1922, in the middle of this war, the Irish Free State came into being. For its first years the new state was governed by the victors of the Civil War. However in the 1930s Fianna Fáil, the party of the opponents of the treaty, were elected into government. The party introduced a new constitution in 1937 which renamed the state to simply "Ireland".
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 vast majority of the population of Northern Ireland identifies with one of two different groups, unionists and nationalists. Both sides of the community are often described by their predominant religious attachments. Unionists are predominantly Protestant (the major Protestant faith is Presbyterianism, the second in terms of size is the Church of Ireland), while nationalists are predominantly Catholic. However, contrary to widespread belief, not all Catholics necessarily support nationalism, and not all Protestants necessarily support unionism. It is also important to note that, in parallel with other parts of Europe, the proportion of the population practising their religious beliefs has fallen dramatically in recent decades, particularly among Catholics and adherents of mainstream Protestant denominations. This has not necessarily resulted in a weakening of communal feeling.
Today, Northern Ireland comprises a diverse patchwork of community rivalries, represented in some areas by whole communities where lamp posts and some homes fly the Irish national flag, the tricolour, or the Union Flag, the symbol of British identity, while even the kerbstones in less affluent areas get painted green-white-orange or red-white-blue, depending on whether a local community expresses nationalist/republican or unionist/loyalist sympathies.
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.
There are many references to food and drink in early Irish literature. Honey seems to have been widely eaten and used in the making of mead. The old stories also contain many references to banquets, although these may well be greatly exaggerated and provide little insight to every diet. There are also many references to fulacht fiadh. These were sites for cooking deer, and consisted of holes in the ground which were filled with water. The meat was placed in the water and cooked by the introduction of hot stones. Many fulacht fiadh sites have been identified across the island of Ireland, and some of them appear to have been in use up to the 17th century.
As archaeological evidence from sites such as the Céide Fields in County Mayo and Lough Gur in County Limerick demonstrates, farming in Ireland is an activity that goes back to the very beginnings of human settlement. In historic times, texts such as the Táin Bó Cúailinge show a society in which cattle represented a primary source of wealth and status. Little of this had changed by the time of the Norman conquest of Ireland in the 12th century. Giraldus Cambrensis portrays a Gaelic society in which cattle farming and transhumance is the norm. Three hundred years later, the society depicted in Edmund Spenser's A View of the Present State of Ireland had changed remarkably little. Even today, when a quarter of the population of the Republic lives in Dublin, the cattle population is of the order of 6.7 million. The total population of humans on the island, north and south, only just approaches this figure.
Northern Ireland has been a major factor in Irish politics since the island of Ireland was divided between Northern Ireland and the twenty-six county southern state in 1920. The creation of Northern Ireland led to conflict between northern nationalists (mostly Catholic) who seek unification with the independent southern state and Unionists (mostly Protestant) who wish for Northern Ireland to remain within the United Kingdom. This conflict exploded into a violent conflict in the late sixties known as the 'Troubles' involving groups such as the Provisional IRA, loyalist paramilitaries, the police and the British army. The Troubles have caused thousands of deaths in Northern Ireland but have also spilled over into bombings and acts of violence on Great Britain and in the Republic of Ireland.
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.
Since its foundation it has been the stated long-term policy of governments of the state now called the Republic of Ireland to bring an end to the conflict in Northern Ireland and to bring about a united Ireland. Northern Ireland has also, in the past, often been a source of conflict between the Irish Government and the government of the United Kingdom. In order to find a solution to the Troubles the Irish Government became a partner in the Good Friday (Belfast) Agreement in 1998.
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 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.
Northern Ireland is an administrative region and one of four constituent parts of the United Kingdom. It is located on the island of Ireland, where it shares a land border with the Republic of Ireland, the only part of the United Kingdom with a land border. It covers 14,139 square kilometres (5,459 square miles) in the north-east of the island of Ireland, about a sixth of the total area of the island, and has a population of 1,685,000 (April 2001) — between a quarter and a third of the total island's population.