As a nation-state, the country was formed by the merging of Moldavia and Wallachia in 1859 and it gained recognition of its independence in 1878. Its capital and largest city is Bucharest, the 6th largest city in the EU with 1.9 million people. Romania began the transition from Communism in 1989 with a largely obsolete industrial base and a pattern of output unsuited to the country's needs. The country emerged in 2000 from a punishing three-year recession thanks to strong demand in EU export markets. Despite the global slowdown in 2001-02, strong domestic activity in construction, agriculture, and consumption have kept GDP growth above 4%. However, macroeconomic gains have only recently started to spur creation of a middle class and address Romania's widespread poverty, while corruption and red tape continue to handicap the business environment. Romanian government confidence in continuing disinflation was underscored by its currency revaluation in 2005, making 10,000 "old" lei equal 1 "new" leu. The economy grew at 6.4% in 2006, the strongest growth in the last decade. Romania joined the European Union on 1 January 2007, and the IMF has praised the country's recent reform efforts in preparation for EU accession.