British and Irish authorities sign the <a href="https://en.wikipedia.org/wiki/Sunningdale_Agreement" id="mwASo" rel="mw:WikiLink" title="Sunningdale Agreement">Sunningdale Agreement</a> in an attempt to establish a power-sharing <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Northern_Ireland_Executive_(1974)" id="mwASs" rel="mw:WikiLink" title="Northern Ireland Executive (1974)">Northern Ireland Executive</a> and a cross-border <a href="https://en.wikipedia.org/wiki/Council_of_Ireland" id="mwASw" rel="mw:WikiLink" title="Council of Ireland">Council of Ireland</a>.