Description acceptable. A year after the largest instance of this action, a tourism board ran ads with a handsome plumber to spoof a stock character invoked by opponents of it. The PHARE restructuring program was created to assist in this action. The Copenhagen criteria were drawn up in anticipation of multiple instances of this action after the breakup of the Soviet Union. (10[1])The “petit oui” was a lukewarm response to one proposed instance of this action, which was rejected by two referendums (10[1]-5[1])in Norway. The abandonment of (10[1])preliminary (10[1])steps toward (-5[1])taking this action (10[1])by the government of Viktor Yanukovych triggered the Maidan (10[1])uprising. The adoption (10[1])of a common currency following this action is governed by criteria laid out in the Maastricht (10[1])Treaty. For 10 points, name this action that was reversed by Brexit. ■END■ (10[2])