The European Economic Community (EEC), created by the 1957 Treaty of Rome, was a common market and customs union among six Western European states that set aside nationalist rivalries for economic integration, later evolving into the European Union (KC-4.4.IV.A).
The European Economic Community (EEC), also called the Common Market, was an economic alliance founded by the 1957 Treaty of Rome. Six countries signed on: France, West Germany, Italy, Belgium, the Netherlands, and Luxembourg. The deal was simple but radical for a continent that had just fought two world wars over national rivalries. Members would drop tariffs against each other, share a common external tariff, and let goods, capital, and eventually workers move freely across borders.
The AP CED frames the EEC as the middle link in a chain (KC-4.4.IV.A). The European Coal and Steel Community (1951) tied French and German heavy industry together so war between them would become practically impossible. The EEC expanded that logic from coal and steel to the whole economy. By 1993 it grew into the European Union, which added political integration on top of the economic foundation. The throughline is that European states began choosing transnational cooperation over the nationalism that had wrecked the continent twice in 30 years.
The EEC sits at the center of Unit 9's integration story and supports AP Euro 9.10.A directly, which asks you to explain how the formation of transnational unions influenced economic developments after World War II. It also feeds AP Euro 9.2.A and 9.6.A, because the EEC accelerated the postwar 'economic miracle' that Marshall Plan funds kicked off (KC-4.2.IV.A), boosting growth and consumerism across Western Europe. Finally, it matters for AP Euro 9.15.A and the question of European identity. The EEC was the first serious attempt to make 'European' an economic and political category, not just a geographic one, which is exactly the continuity-and-change framing Unit 9 closes on.
Keep studying AP Euro Unit 9
Treaty of Rome (Unit 9)
This is the founding document. If a question dates the EEC to 1957, the Treaty of Rome is why. AP questions often test whether you know the treaty created a common market, not just a vague 'alliance.'
European Union (EU) (Unit 9)
The EU is what the EEC became. Knowing the sequence (ECSC, then EEC, then EU) lets you trace KC-4.4.IV.A's claim that integration 'grew in size and scope' over the second half of the 20th century. The EU added political dimensions, like the euro and the European Parliament, that the EEC never had.
Marshall Plan and the Economic Miracle (Unit 9)
Marshall Plan dollars rebuilt Western European industry; the EEC then knit those recovering economies together. Think of the Marshall Plan as the jump-start and the EEC as the engine that kept the 'economic miracle' running into the 1960s, fueling consumer culture along the way.
Cold War Division of Europe (Unit 9)
The EEC was a Western club. While capitalist Western Europe integrated through the Common Market, the Soviet bloc had its own economic arrangement under Moscow's control. The EEC is half of the polarized state order described in KC-4.1, so use it as evidence of how the Cold War split Europe economically, not just militarily.
Multiple-choice questions usually test the EEC in one of three ways. First, identifying its goal, which was economic integration through a common market and customs union. Second, explaining how it represented a shift from earlier European cooperation, meaning states voluntarily pooled economic sovereignty instead of competing as rivals. Third, placing it in the integration sequence from ECSC to EEC to EU. Questions also pair the EEC with the 1957 Treaty of Rome, so lock that date and document together. No released FRQ has used the term verbatim, but the EEC is prime evidence for LEQs on continuity and change in 20th-century Europe. A change-over-time argument that moves from nationalist rivalry (1914-1945) to transnational integration (1951 onward) practically writes itself with the EEC as the hinge.
The EEC and EU are not the same thing, even though one became the other. The EEC (1957) was purely economic: a common market and customs union among six members. The EU (1993, via the Maastricht Treaty) absorbed the EEC and added political integration, including a shared currency (the euro), a European Parliament, and free movement of people. On the exam, sovereignty debates like Brexit belong to the EU era, while the postwar economic miracle and Common Market questions belong to the EEC era.
The EEC was created by the 1957 Treaty of Rome among six founding members: France, West Germany, Italy, Belgium, the Netherlands, and Luxembourg.
Its core goal was economic integration through a common market and customs union, which is why it was nicknamed the Common Market.
The EEC grew out of the European Coal and Steel Community and later evolved into the European Union, showing how integration expanded in size and scope (KC-4.4.IV.A).
It marked a deliberate shift away from the nationalist rivalries that caused two world wars, replacing competition with cooperation.
The EEC reinforced the postwar economic miracle that Marshall Plan funding started, boosting growth and consumerism in Western Europe.
Only Western European states joined; the EEC was a Cold War institution that deepened the economic divide between the capitalist West and the communist East.
The EEC was an economic organization founded by the 1957 Treaty of Rome among six Western European countries. It created a common market and customs union to integrate members' economies, and it eventually evolved into the European Union.
No, but they're directly related. The EEC was the economic-only predecessor; it became the European Union in 1993, when integration expanded to include political elements like the euro and the European Parliament.
The ECSC (1951) only integrated two industries, coal and steel, mainly to bind France and West Germany together. The EEC (1957) took that same logic and applied it to entire economies, removing tariffs and creating a true common market. The CED treats them as steps in one chain: ECSC to EEC to EU.
European states wanted to set aside the nationalist rivalries that produced two world wars and to speed up postwar economic recovery (KC-4.4.IV). Tying economies together made another Franco-German war economically self-destructive while fueling the growth of the economic miracle.
No. The EEC was a Western, capitalist institution during the Cold War. Soviet-bloc states were excluded and operated under Moscow-dominated economic arrangements, so the EEC actually deepened the East-West divide. Eastern European countries only joined the integration project later, as EU members after the Cold War ended.