What organizations has encouraged free trade increased economic interdependence and lessened travel restrictions among European countries?

The European Union (EU) is the primary organization that has encouraged free trade, increased economic interdependence, and lessened travel restrictions among European countries. Through initiatives like the Single Market, the EU allows for the free movement of goods, services, capital, and people across member states. Additionally, organizations such as the European Free Trade Association (EFTA) support similar goals by fostering trade agreements among non-EU countries in Europe. These collaborations have significantly enhanced economic ties and facilitated travel within the region.