Thursday, March 18, 1999 Published at 17:01 GMT
1968-69: The troops are sent in
British troops take to the streets of Northern Ireland, 1969
Civil rights The Northern Ireland Civil Rights Association organises protests in August against anti-Catholic discrimination over housing.
People's Democracy A march by Queen's University students on October 9 is blocked by loyalists. A radical left-wing group, People's Democracy, is formed. One of its original members is Bernadette Devlin.
Reforms Northern Ireland Prime Minister Terence O'Neill is summoned to London by British PM Harold Wilson to discuss the mounting crisis on November 4.
On the 27th, O'Neill puts forward a five-point plan: fairer allocation of housing, an Ombudsman, an end to company votes in council elections, a review of the Special Powers Act and a Londonderry Development Corporation.
'At the crossroads' An NICRA march in November is opposed by an illegal protest led by the Rev Ian Paisley, who is later jailed for unlawful assembly.
O'Neill goes on TV in early December, saying the people that "Ulster stands at the crossroads" and appealing for calm. Home Affairs minister William Craig, criticises him and resigns.
Bogside no-go People's Democracy organises a march from Belfast to Derry. It is small but designed to draw attention to itself as much of the route is through Protestant territory and is accompanied by the media. On January 4, 1969, it is attacked by larger numbers of loyalists using sticks and stones at Burntollet bridge.
The police fail to protect the marchers and that evening RUC Reservists break doors and windows in the Catholic Bogside. Residents create a local citizens' army, making the Bogside a police no-go area.
Elections O'Neill holds a general election on February 24 and is returned to office, but lacks an overwhelming mandate for reform.
Bernadette Devlin (later McAliskey) wins Mid-Ulster by-election for Unity on a socialist platform on April 18.
O'Neill falls Four founding members of NICRA resign in March over extremist infiltration. In April, a series of explosions are said by the RUC to be the work of an IRA plan and British troops are sent.
The explosions are later proved to have been carried out by loyalists but Unionists believe concessions are encouraging terrorism and force O'Neill to resign on April 28. He is replaced by James Chichester-Clark.
Battle of the Bogside Protracted rioting throughout the province in July and August stretches the RUC to the limit. The worst trouble occurs after an Apprentice Boys parade in Londonderry on August 12.
Loyalist backlash The Hunt report recommends the disarming of the RUC, the abolition of the Ulster Special Constabulary and the setting-up of the Ulster Defence Regiment under Army control.
Belfast loyalists respond on October 12 by clashing with troops in the Shankill road - three people, one an RUC officer, are killed.
IRA splits The IRA splits in December 1969 into two wings - the more marxist Official IRA and the more hardline Provisionals.