Question: Which country's longest continuous deployment began because of intense political and sectarian rioting in Northern Ireland?
Sentence (from "1969 Northern Ireland riots"): There had been sporadic violence throughout the year arising from the civil rights campaign, which was demanding an end to discrimination against Irish Catholics. Civil rights marches were repeatedly attacked by both Ulster Protestant loyalists and by the Royal Ulster Constabulary (RUC), a unionist and largely Protestant police force.
Relevant evidence: No