The history of European integration began after World War II to unite Europe economically and prevent future wars. In 1950, the Schuman Declaration proposed a European Coal and Steel Community to pool the industries between France and Germany. This led to the 1951 Treaty of Paris establishing the ECSC. In 1957, the Treaties of Rome created the European Economic Community and Euratom to build a single market. Over subsequent decades, more countries joined and treaties expanded the EU's scope and powers, including the introduction of the euro currency. Today, the EU comprises numerous institutions that work together to determine policy, legislate, administer programs, and more for the economic and political cooperation of member states.