During this decade, the D-notice system was formalized to ward off newspapers publishing on sensitive topics. Times editor Geoffrey Dawson refused to publish the anti-war Lansdowne Letter during this decade. The Maurice Debate took place (-5[1])during this decade and influenced whether or not candidates received the impactful coalition coupon. The ensuing (*) “coupon election” (10[1])during this decade (10[1])gave Sinn Féin (“shin fain”) their first Irish majority and split the Liberal Party led by H. H. Asquith. (-5[1])The Parliament Act was passed during this decade after the House (-5[1])of Lords vetoed the previous decade’s “People’s Budget.” The Royal Air Force was formed in this decade during the David Lloyd George ministry. For 10 points, (10[1])name this decade during which a U-boat sunk the Lusitania. ■END■ (10[2])