Many countries worked together. 

Long ago, six lands joined together. 

The European Economic Community, or EEC, started in 1957. 
In 1962, they set fair prices for farm goods. By 1968, they removed taxes on some trade. In 1973, new countries joined. The United Kingdom, Denmark, and Ireland became members. 
In 1979, people voted for the European Parliament for the first time. This made the group more active. In 1993, the EEC became the European Community. It grew to include a single market. This let goods and people move freely. In 2009, the group changed again. The European Union took over its work. Today, the rules from the old treaties still help the Union work.
The European Economic Community, or EEC, was a way for countries to work together. It was created to help the economy of Europe grow. This group wanted to make a common market for its members. 
Building this community took many careful steps. First, leaders wanted to prevent future wars by connecting their economies.
History shows that making these choices was not always easy. 
Many countries wanted to join the growing group over the years. 

Today, the EEC has changed into something even bigger. In 1993, the Maastricht Treaty changed the name to the European Community. This was because the group did much more than just trade. 
The European Economic Community, often called the EEC, was a regional organization built to foster economic integration. It was established by the Treaty of Rome on March 25, 1957. The main goal was to create a common market and a customs union. This allowed member states to work closely on trade and economic policy. 
The mechanism of the EEC relied on bringing different national economies under shared rules. The founding members included Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany. These nations sought to create an internal market. By 1993, this internal market was complete. It allowed for the free movement of goods, capital, services, and people.
There were several distinct communities working together during the early years. The EEC worked alongside the European Coal and Steel Community (ECSC) and the European Atomic Energy Community (EURATOM). The ECSC had been created earlier in 1951 via the Treaty of Paris. It used supranationalism, which means shared authority, to help the economy and prevent war. The 1965 Merger Treaty eventually combined the institutions of these groups. From 1967 onward, they were collectively known as the European Communities. 
The history of the EEC is a story of negotiation and changing ideas. After the ECSC, leaders like Jean Monnet looked for ways to integrate through economics rather than politics. Following the 1955 Messina Conference, Paul-Henri Spaak prepared a report on customs unions. His work, known as the Spaak Report, became a cornerstone for the Treaty of Rome. Early years saw significant milestones, such as setting common prices for agricultural products in 1962. 
However, the path to unity faced major political challenges and crises. French President Charles de Gaulle often opposed supranationalism. He feared that central institutions would challenge national sovereignty. In 1965, he triggered the "empty chair crisis" by withdrawing French representatives. This was a protest against new voting rules. Eventually, the 1966 Luxembourg compromise allowed members to use a veto on matters of national interest. 
Enlargement changed the scale and influence of the community over time. While some applications were blocked by vetoes, others succeeded through careful negotiation. Denmark, Ireland, and the United Kingdom joined on January 1, 1973. 

The EEC's legacy is tied to the modern European Union. In 1993, the Maastricht Treaty renamed the EEC to the European Community. This change reflected that the group now covered much more than just economic policy. It became one of the three pillars of the newly formed European Union. 
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