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: John Dermot Campbell DL (20 January 1898 – 23 January 1945) was a Northern Irish businessman and Ulster Unionist Member of Parliament in both United Kingdom and Northern Ireland Parliaments. He was killed during the Second World War in a plane crash.

paragraph_text: Seán Neeson (born 9 February 1946) is a politician in Northern Ireland who served as leader of the Alliance Party of Northern Ireland between 1998 and 2001.

paragraph_text: Most tornadoes in the United States occur east of the Rocky Mountains. The Great Plains, the Midwest, the Mississippi Valley and the southern United States are all areas that are vulnerable to tornadoes. They are relatively rare west of the Rockies and are also less frequent in the northeastern states. Tornado Alley is a colloquial term for an area particularly prone to tornadoes. There is no officially defined 'Tornado Alley' -- at its broadest this area stretches from North Texas to Canada with its core centered on Oklahoma, Kansas and northern Texas. Another highly significant region -- colloquially known as Dixie Alley -- is the southern United States and particularly the northern and central parts of Alabama and Mississippi. Florida is one of the most tornado prone states. However, Florida tornadoes only rarely approach the strength of those that occur elsewhere.

paragraph_text: Billy Rice (born 12 September 1938 in Belfast, Northern Ireland, died 26 June 2008) was a football player who played for Australia in their 1966 FIFA World Cup qualification campaign.

paragraph_text: Tornadoes have been recorded on all continents except Antarctica and are most common in the middle latitudes where conditions are often favorable for convective storm development. The United States has the most tornadoes of any country, as well as the strongest and most violent tornadoes. A large portion of these tornadoes form in an area of the central United States popularly known as Tornado Alley. Other areas of the world that have frequent tornadoes include significant portions of Europe, South Africa, Philippines, Bangladesh, parts of Argentina, Uruguay, and southern and southeast Brazil, northern Mexico, New Zealand, and far eastern Asia.

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.

paragraph_text: The settlement sits on the border of County Donegal in the Republic of Ireland and County Londonderry in Northern Ireland.

paragraph_text: The United States averaged 1,274 tornadoes per year in the last decade while Canada reports nearly 100 annually (largely in the southern regions). However, the UK has most tornadoes per area per year, 0.14 per 1000 km2, although these tornadoes are generally weak, and many other European countries have a similar number of tornadoes per area.

paragraph_text: Daybreak Northern Ireland (previously "GMTV Northern Ireland") was the regional news strand for Northern Ireland provided for the ITV breakfast station ITV Breakfast.

paragraph_text: The Late-May 1998 tornado outbreak and derecho was a historic tornado outbreak and derecho that began on the afternoon of May 30 and extended throughout May 31, 1998, across a large portion of the northern half of the United States and southern Ontario from southeastern Montana east and southeastward to the Atlantic Ocean. The initial tornado outbreak, including the devastating Spencer tornado, hit southeast South Dakota on the evening of May 30. The Spencer tornado was the most destructive and the second-deadliest tornado in South Dakota history. Eleven people were killed; 7 by tornadoes and 6 by the derecho. Over two million people lost electrical power, some for up to 10 days.

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: Woundlicker is a novel by the journalist Jason Johnson, which is set in Belfast, Northern Ireland. The story takes place during the slow-moving Northern Ireland peace process talks of 2004 and is written as the verbatim transcription of a covert British government recording. Johnson said his debut novel, published in 2005, was "a story without heroes set in a city where there are far too many."

paragraph_text: The Parliament of Northern Ireland was the Home Rule legislature of Northern Ireland, created under the Government of Ireland Act 1920, which sat from 7 June 1921 to 30 March 1972, when it was suspended with the introduction of Direct Rule. It was abolished under the Northern Ireland Constitution Act 1973.

paragraph_text: Newcastle Scots: Newkessel / Newcaissle Irish: An Caisleán Nua View from main street in Newcastle towards Slieve Donard, the highest peak of the Mourne Mountains. Newcastle Newcastle shown within County Down Population 7,444 Belfast 32.5 miles (52.3 km) District Newry, Mourne and Down County County Down Country Northern Ireland Sovereign state United Kingdom Post town NEWCASTLE Postcode district BT33 Dialling code 028 Police Northern Ireland Fire Northern Ireland Ambulance Northern Ireland EU Parliament Northern Ireland UK Parliament South Down NI Assembly South Down List of places UK Northern Ireland Down 54 ° 12 ′ 54 ''N 5 ° 53 ′ 24'' W ﻿ / ﻿ 54.215 ° N 5.890 ° W ﻿ / 54.215; - 5.890 Coordinates: 54 ° 12 ′ 54 ''N 5 ° 53 ′ 24'' W ﻿ / ﻿ 54.215 ° N 5.890 ° W ﻿ / 54.215; - 5.890

paragraph_text: Ralph Bryans (7 March 1941 – 6 August 2014) was a Grand Prix motorcycle road racer from Northern Ireland. Bryans was Ireland’s only Grand Prix world champion, winning the 50 cc title in 1965.

paragraph_text: The Troubles (Irish: Na Trioblóidí) was an ethno - nationalist conflict in Northern Ireland during the late 20th century. Also known internationally as the Northern Ireland conflict, and the Conflict in Ireland it is sometimes described as a ``guerrilla war ''or a`` low - level war''. The conflict began in the late 1960s and is usually deemed to have ended with the Good Friday Agreement of 1998. Although the Troubles primarily took place in Northern Ireland, at times the violence spilled over into parts of the Republic of Ireland, England, and mainland Europe.

paragraph_text: Based on a number of inequities, the Northern Ireland Civil Rights Association was founded in 1967. It had five primary demands, and added the demand that each citizen in Northern Ireland be afforded the same number of votes for local elections (national elections followed the same eligibility rules as the rest of the UK). The slogan ``one man, one vote ''became a rallying cry for this campaign. The Parliament of Northern Ireland voted to update the voting rules, which were implemented for the Northern Ireland general election, 1969.

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: 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''.

Question: When did the country with the most tornadoes in the world take over northern Ireland?
Answer: 1921