After the fall of the Soviet Union and communist rule in Eastern Europe, East Germany (now unified with West Germany) automatically joined the European Union (then the European Community) in 1990. The Baltic States (Estonia, Latvia and Lithuania), Czech Republic, Hungary, Poland, Slovakia, and Slovenia joined the EU in 2004, followed by Bulgaria and Romania in 2007 and Croatia in 2013. To date, Czech Republic, Estonia, Germany (former GDR), Hungary, Latvia, Poland, Slovakia, and Slovenia are now members of the Organisation for Economic Co-operation and Development. All four Central European states are now members of the Visegrad Group.