 Complete the following phrase:  As in most European countries, the outbreak of World War I brought about the exchanges closure on 27 July 1914, although trading did not cease. Brokers continued trading during the war and equity prices showed a massive increase starting in 1914. By 1918 over 7.2 million securities had been traded in a year. The exchange reopened after the war were, the post-war inflationary environment pushed exchange turnover to exceptional highs, tempered only by the introduction in 1925 of the countrys new currency, the pengő. The following four years leading to the 