Many countries work together. 
Many countries in South America work as a team. 
They call this team Mercosur. Argentina and Brazil started the idea. Later, Paraguay and Uruguay joined them.
These lands trade many goods. They also help people move between lands. This helps their economies grow strong.
It is a very big group. It is one of the largest in the world.
Working together helps these lands succeed.
Mercosur is a trade group in South America. 
Many years ago, countries in this area often had wars. They also had different ways of trading. In 1985, leaders from Brazil and Argentina met. They signed a paper to work together. This helped their economies grow. Soon, Paraguay and Uruguay joined the group. They signed the Treaty of Asunción in 1991. This treaty made the Mercosur team official.
Today, the group has five full members. These are Argentina, Bolivia, Brazil, Paraguay, and Uruguay. Venezuela is also a member, but it was suspended in 2016. 
The group helps goods move easily between lands. They also help people move across borders. This is done through a customs union. A customs union means members use the same trade rules. This makes trade fair for everyone. In 2023, the group was a very large economy. It was the 5th largest in the world.
Working as a team helps these nations stay strong. It also helps them connect to the rest of the world.
Mercosur is a large group of countries in South America. 
This group works as a customs union. This means member countries follow the same trade rules. They use a common external tariff for goods coming from outside the group. This helps keep trade fair for everyone involved. The group also helps people move between different countries. They made an agreement in 2014 to help with this movement. This makes it easier for people to travel and work. 
Many years ago, South American countries often had conflicts. They sometimes fought wars over different interests. In 1985, leaders from Brazil and Argentina decided to change this. President José Sarney and President Raúl Alfonsín signed the Iguaçu Declaration. They wanted to help their economies grow together. This led to more agreements between the two nations. Eventually, Paraguay and Uruguay also wanted to join the process. 
The group was officially started in 1991. This happened through the Treaty of Asunción. 
Mercosur is a very powerful economic force. In 2023, it had a yearly GDP of about 5.7 trillion US dollars. This makes it the 5th largest economy in the world. It also scores high on the human development index. This means it helps improve life for many people. The group helps its members connect to the global world. It shows how working together can create big results.
Mercosur is a major South American trade bloc. It is known as the Southern Common Market. People call it Mercosur in Spanish and Mercosul in Portuguese. 
The bloc operates primarily as a customs union. This means member nations follow shared trade rules. They use a common external tariff on imports from outside the group. This tariff is a tax applied to goods coming from non-member countries.
Mercosur has several distinct types of membership. The full members are Argentina, Bolivia, Brazil, Paraguay, and Uruguay.
The history of Mercosur began with a desire for regional unity. Long ago, South American nations often had competing interests. They sometimes engaged in various wars and conflicts. In 1941, Brazil and Argentina tried to form a customs union. This failed due to diplomatic differences during the Second World War. Later, leaders sought new ways to connect their economies. In 1985, President José Sarney of Brazil and President Raúl Alfonsín of Argentina signed the Iguaçu Declaration. 
Following that declaration, the two nations signed more agreements. They created the Argentina-Brazil Integration and Economic Cooperation Program. In 1990, the leaders signed the Buenos Aires Act. This act aimed for total customs integration between the two countries. By 1991, the Treaty of Asunción was signed. This treaty officially established the Southern Common Market. Paraguay and Uruguay joined the process as well.
To manage its complex work, Mercosur uses specific institutions. The Common Market Group handles many technical tasks. It consists of four full members and four alternate members from each country. The Common Market Council is the highest authority. It manages political decisions and ensures everyone meets deadlines. The group also established the Mercosur Parliament in 2004. 
Mercosur is an incredibly powerful economic force. In 2023, the bloc generated a nominal annual gross domestic product of 5.7 trillion US dollars. This figure is measured using purchasing power parity. 
Beyond simple trade, the bloc focuses on human connection. In December 2014, Mercosur reached an agreement with the International Organization for Migration. This agreement helps people move across borders more easily. This movement includes workers and their families. The bloc also works to prevent unfair trade practices. Members use national laws to stop imports influenced by unfair subsidies. By doing this, they protect their own local industries.
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