The 2007 enlargement of the European Union saw Bulgaria and Romania join the European Union (EU) on 1 January 2007. Together with the 2004 enlargement of the European Union, it is considered part of the fifth wave of enlargement of the European Union.
Romania was the first country of post-communist Europe to have official relations with the European Community. In 1974, a treaty included Romania in the Community's Generalized System of Preferences. Since the Romanian Revolution of 1989, membership of the EC, and its successor the European Union (EU), has been the main goal of every Romanian Government and practically every political party in Romania. Romania signed its Europe Agreement in 1993, and submitted its official application for membership in the EU in 1995, the third of the post–communist European countries to do so after Hungary and Poland. Along with its official EU application, Romania submitted the “Snagov Declaration”, signed by all fourteen major political parties declaring their full support for EU membership.
During the 2000s, Romania implemented a number of reforms to prepare for EU accession, including the consolidation of its democratic systems, the institution of the rule of law, the acknowledgement of respect for human rights, the commitment to personal freedom of expression, and the implementation of a functioning free-market economy. The objective of joining the EU has also influenced Romania's regional relations. As a result, Romania has imposed visa regimes on a number of states, including Russia, Ukraine, Belarus, Serbia, Montenegro, Turkey and Moldova.