The eu has developed an internal single market through a standardised system of laws that apply in all member states in those matters and only those. The european union eu is a group of 28 nations in europe formed in the aftermath of world war ii. Map Which Countries Are In The European Union In 2020 Which Aren Its members have a combined area of 42332553 km 2 16344690 sq mi and an estimated total population of about 447 million. List european union countries map . The first batch of countries joined in 1957 which included germany france italy belgium luxembourg and the netherlands. It is an area without internal borders an area within which citizens many non eu nationals business people and tourists can freely circulate without being subjected to border checks. At present may 9 is celebrated annually as europe day. You are free to use above map for educational purposes fair use please refer to the nations online project. The...