British Prime Minister <a href="https://en.wikipedia.org/wiki/Margaret_Thatcher" id="mwATA" rel="mw:WikiLink" title="Margaret Thatcher">Margaret Thatcher</a> and President of France <a href="https://en.wikipedia.org/wiki/François_Mitterrand" id="mwATE" rel="mw:WikiLink" title="François Mitterrand">François Mitterrand</a> sign the agreement to build a tunnel under the <a href="https://en.wikipedia.org/wiki/English_Channel" id="mwATI" rel="mw:WikiLink" title="English Channel">English Channel</a> (<a class="mw-redirect" href="https://en.wikipedia.org/wiki/Eurotunnel" id="mwATM" rel="mw:WikiLink" title="Eurotunnel">Eurotunnel</a>).