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Why did the Sunningdale power-sharing executive collapse in 1974?

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Everyday life during the Troubles — the Troubles Local people walking past a British soldier on guard in Northern Ireland, August 1969.

The Sunningdale power-sharing executive collapsed in May 1974 primarily due to intense opposition from unionists who were frustrated by the diminution of their traditional political power and angered by the inclusion of the Republic of Ireland in Northern Irish affairs.12

The executive, established following the Sunningdale Agreement of 1973, aimed to create a power-sharing assembly and a Council of Ireland to link the two jurisdictions. However, this arrangement faced fierce resistance from loyalists who viewed the cross-border cooperation as a threat to their position within the United Kingdom.132

The collapse was ultimately forced by a general strike organized by the Ulster Workers’ Council, a committee backed by Protestant paramilitaries. The strike brought the province to a halt, effectively paralyzing the government and forcing a return to direct rule from London, which would remain in place for approximately 25 years.12