The EU is a 27-member political and economic organization that arose from post-WWII partnerships and has gradually expanded its scope and membership over time. It was initially more intergovernmental in nature but has become increasingly supranational, with member states giving up some sovereignty. The EU was formed to promote economic cooperation, prevent future conflicts between European countries, and allow its members to exert more influence globally. It is comprised of three pillars covering socio-economic, foreign policy and justice issues.