Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west. At the time of the 2001 UK Census, its population was 1,685,000, constituting about 30% of the island's total population and about 3% of the population of the United Kingdom.
Northern Ireland consists of six of the nine counties of the Irish province of Ulster. It was created as a distinct division of the United Kingdom on 3 May 1921 under the Government of Ireland Act 1920, though its constitutional roots lie in the 1800 Act of Union between Great Britain and Ireland. For over 50 years it had its own devolved government and parliament. These institutions were suspended in 1972 and abolished in 1973. Repeated attempts to restore self-government finally resulted in the establishment in 1998 of the present-day Northern Ireland Executive and Northern Ireland Assembly. The Assembly operates on consociational democracy principles requiring cross-community support.