paragraph_text: Unwilling to negotiate any understanding with Britain short of complete independence, the Irish Republican Army, the army of the newly declared Irish Republic, waged a guerilla war (the Irish War of Independence) from 1919 to 1921. In the course of the fighting and amid much acrimony, the Fourth Government of Ireland Act 1920 implemented Home Rule while separating the island into what the British government's Act termed ``Northern Ireland ''and`` Southern Ireland''. In July 1921 the Irish and British governments agreed to a truce that halted the war. In December 1921 representatives of both governments signed an Anglo - Irish Treaty. The Irish delegation was led by Arthur Griffith and Michael Collins. This abolished the Irish Republic and created the Irish Free State, a self - governing Dominion of the Commonwealth of Nations in the manner of Canada and Australia. Under the Treaty, Northern Ireland could opt out of the Free State and stay within the United Kingdom: it promptly did so. In 1922 both parliaments ratified the Treaty, formalising independence for the 26 - county Irish Free State (which renamed itself Ireland in 1937, and declared itself a republic in 1949); while the 6 - county Northern Ireland, gaining Home Rule for itself, remained part of the United Kingdom. For most of the next 75 years, each territory was strongly aligned to either Catholic or Protestant ideologies, although this was more marked in the six counties of Northern Ireland.

paragraph_text: The British Isles are a group of islands off the north-western coast of continental Europe that consist of the islands of Great Britain, Ireland and over six thousand smaller isles. Situated in the North Atlantic, the islands have a total area of approximately 315,159 km2, and a combined population of just under 70 million. Two sovereign states are located on the islands: Ireland (which covers roughly five-sixths of the island with the same name) and the United Kingdom of Great Britain and Northern Ireland. The British Isles also include three Crown Dependencies: the Isle of Man and, by tradition, the Bailiwick of Jersey and the Bailiwick of Guernsey in the Channel Islands, although the latter are not physically a part of the archipelago.

paragraph_text: This is a list of the Areas of Special Scientific Interest (ASSIs) in County Fermanagh in Northern Ireland, United Kingdom.

paragraph_text: Made in Chelsea (abbreviated MIC) is a BAFTA award-winning, structured-reality television series broadcast by E4 in the United Kingdom. "Made in Chelsea" chronicles the lives of affluent young people in the West London and South West areas of Belgravia, Kings Road, Chelsea and Knightsbridge, as well as their travels to other locations around the world.

paragraph_text: The United Kingdom has traditionally been governed as a unitary state by the Westminster Parliament in London. Instead of adopting a federal model, the UK has relied on gradual devolution to decentralise political power. Devolution in the UK began with the Government of Ireland Act 1914 which granted home rule to Ireland as a constituent country of the former United Kingdom of Great Britain and Ireland. Following the partition of Ireland in 1921 which saw the creation of the sovereign Irish Free State (which eventually evolved into the modern day Republic of Ireland), Northern Ireland retained its devolved government through the Parliament of Northern Ireland, the only part of the UK to have such a body at this time. This body was suspended in 1972 and Northern Ireland was governed by direct rule during the period of conflict known as The Troubles.

paragraph_text: In accordance with the treaty, on 6 December 1922 the entire island of Ireland became a self - governing dominion called the Irish Free State (Saorstát Éireann). Under the Constitution of the Irish Free State, the Parliament of Northern Ireland had the option to leave the Irish Free State one month later and return to the United Kingdom. During the intervening period, the powers of the Parliament of the Irish Free State and Executive Council of the Irish Free State did not extend to Northern Ireland. Northern Ireland exercised its right under the treaty to leave the new dominion and rejoined the United Kingdom on 8 December 1922. It did so by making an address to the King requesting, ``that the powers of the Parliament and Government of the Irish Free State shall no longer extend to Northern Ireland. ''The Irish Free State was a constitutional monarchy sharing a monarch with the United Kingdom and other dominions of the British Commonwealth. The country had a governor - general (representing the monarch), a bicameral parliament, a cabinet called the`` Executive Council'', and a prime minister called the President of the Executive Council.

paragraph_text: Ireland, the United Kingdom and the three Crown Dependencies are all parliamentary democracies, with their own separate parliaments. All parts of the United Kingdom return members to parliament in London. In addition to this, voters in Scotland, Wales and Northern Ireland return members to a parliament in Edinburgh and to assemblies in Cardiff and Belfast respectively. Governance in the norm is by majority rule, however, Northern Ireland uses a system of power sharing whereby unionists and nationalists share executive posts proportionately and where the assent of both groups are required for the Northern Ireland Assembly to make certain decisions. (In the context of Northern Ireland, unionists are those who want Northern Ireland to remain a part of the United Kingdom and nationalists are those who want Northern Ireland join with the rest of Ireland.) The British monarch is the head of state for all parts of the isles except for the Republic of Ireland, where the head of state is the President of Ireland.

paragraph_text: There are two sovereign states in the isles: Ireland and the United Kingdom of Great Britain and Northern Ireland. Ireland, sometimes called the Republic of Ireland, governs five sixths of the island of Ireland, with the remainder of the island forming Northern Ireland. Northern Ireland is a part of the United Kingdom of Great Britain and Northern Ireland, usually shortened to simply the United Kingdom, which governs the remainder of the archipelago with the exception of the Isle of Man and the Channel Islands. The Isle of Man and the two states of the Channel Islands, Jersey and Guernsey, are known as the Crown Dependencies. They exercise constitutional rights of self-government and judicial independence; responsibility for international representation rests largely upon the UK (in consultation with the respective governments); and responsibility for defence is reserved by the UK. The United Kingdom is made up of four constituent parts: England, Scotland and Wales, forming Great Britain, and Northern Ireland in the north-east of the island of Ireland. Of these, Scotland, Wales and Northern Ireland have "devolved" governments meaning that they have their own parliaments/assemblies and are self-governing with respect to certain areas set down by law. For judicial purposes, Scotland, Northern Ireland and England and Wales (the latter being one entity) form separate legal jurisdiction, with there being no single law for the UK as a whole.

paragraph_text: Odeon Cinemas Limited Type Subsidiary Founded 1930 Founder Oscar Deutsch Number of locations 122 (United Kingdom) 11 (Ireland) Area served United Kingdom, Ireland and Norway Key people Mark Way (Group chief executive officer) Owner AMC Theatres Parent Odeon Cinemas Group Website www.odeon.co.uk www.odeoncinemas.ie

paragraph_text: Geograph Britain and Ireland is a web-based project, initiated in March 2005, to create a freely accessible archive of geographically located photographs of Great Britain and Ireland.

paragraph_text: CAMRA maintains a "National Inventory" of historical notability and of architecturally and decoratively notable pubs. The National Trust owns thirty-six public houses of historic interest including the George Inn, Southwark, London and The Crown Liquor Saloon, Belfast, Northern Ireland.

paragraph_text: The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a sovereign country lying off the north - western coast of the European mainland. The United Kingdom includes the island of Great Britain, the north - eastern part of the island of Ireland and many smaller islands. Northern Ireland is the only part of the United Kingdom that shares a land border with another sovereign state‍ -- ‌the Republic of Ireland. Apart from this land border, the United Kingdom is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south - south - west, giving it the 12th - longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of 242,500 square kilometres (93,600 sq mi), the United Kingdom is the 78th - largest sovereign state in the world. It is also the 22nd-most populous country, with an estimated 66.0 million inhabitants in 2017.

paragraph_text: Northern Ireland (Irish: Tuaisceart Éireann (ˈt̪ɣuəʃcəɾɣt̪ɣ ˈeːɾjən̪ɣ) (listen); Ulster - Scots: Norlin Airlann) is a part of the United Kingdom in the north - east of the island of Ireland, variously described as a country, province or region. Northern Ireland shares a border to the south and west with the Republic of Ireland. In 2011, its population was 1,810,863, constituting about 30% of the island's total population and about 3% of the UK's population. Established by the Northern Ireland Act 1998 as part of the Good Friday Agreement, the Northern Ireland Assembly holds responsibility for a range of devolved policy matters, while other areas are reserved for the British government. Northern Ireland co-operates with the Republic of Ireland in some areas, and the Agreement granted the Republic the ability to ``put forward views and proposals ''with`` determined efforts to resolve disagreements between the two governments''.

paragraph_text: The Northern Ireland Peace Process has led to a number of unusual arrangements between the Republic of Ireland, Northern Ireland and the United Kingdom. For example, citizens of Northern Ireland are entitled to the choice of Irish or British citizenship or both and the Governments of Ireland and the United Kingdom consult on matters not devolved to the Northern Ireland Executive. The Northern Ireland Executive and the Government of Ireland also meet as the North/South Ministerial Council to develop policies common across the island of Ireland. These arrangements were made following the 1998 Good Friday Agreement.

paragraph_text: The Holiday Show Ireland is an Irish travel show that first aired on TV3 in Ireland on 4 January 2013. The show sees presenters Ciara Whelan and Jon Slattery travelling to various locations throughout Ireland exploring the depths of Ireland's hidden holiday destinations.

paragraph_text: This is a list of the Areas of Special Scientific Interest (ASSIs) in Northern Ireland, United Kingdom. In Northern Ireland the body responsible for designating ASSIs is the Northern Ireland Environment Agency - a division of the Department of Environment (DoE).

paragraph_text: Ireland and the United Kingdom are both part of the European Union (EU). The Crown Dependencies are not a part of the EU however do participate in certain aspects that were negotiated as a part of the UK's accession to the EU. Neither the United Kingdom or Ireland are part of the Schengen area, that allow passport-free travel between EU members states. However, since the partition of Ireland, an informal free-travel area had existed across the region. In 1997, this area required formal recognition during the course of negotiations for the Amsterdam Treaty of the European Union and is now known as the Common Travel Area.

paragraph_text: A further Act of Union in 1800 added the Kingdom of Ireland to create the United Kingdom of Great Britain and Ireland.

paragraph_text: Bloody Friday is the name given to the bombings by the Provisional Irish Republican Army (IRA) in Belfast on 21 July 1972, during the Troubles. At least twenty bombs exploded in the space of eighty minutes, most within a half hour period. Most of them were car bombs and most targeted infrastructure, especially the transport network. Nine people were killed: five civilians, two British soldiers, a Royal Ulster Constabulary (RUC) reservist, and an Ulster Defence Association (UDA) member, while 130 were injured. The IRA said it sent telephoned warnings at least thirty minutes before each explosion and claimed the security forces wilfully ignored some of the warnings for its own ends. The security forces denied this and said they were overstretched by the sheer number of bombs and bomb warnings, some of which were hoaxes.

paragraph_text: Northern Ireland was created in 1921, when Ireland was partitioned between Northern Ireland and Southern Ireland by the Government of Ireland Act 1920. Unlike Southern Ireland, which would become the Irish Free State in 1922, the majority of Northern Ireland's population were unionists, who wanted to remain within the United Kingdom. Most of these were the Protestant descendants of colonists from Great Britain. However, a significant minority, mostly Catholics, were nationalists who wanted a united Ireland independent of British rule. Today, the former generally see themselves as British and the latter generally see themselves as Irish, while a distinct Northern Irish or Ulster identity is claimed both by a large minority of Catholics and Protestants and by many of those who are non-aligned.

Question: When did the border between Ireland and the part of the U.K. that experienced Bloody Friday become a free-travel area?
Answer: 1997