Union of South American Nations in the context of "Quito"

Regional organizations (ROs) are international organizations (IOs) whose membership is limited to states within a single geographic region. They have been established to foster cooperation and political and economic integration or dialogue among states within a region. They vary from loose cooperation arrangements to formal regional integration. Since their formal emergence after the end of World War II, they have become increasingly numerous and influential, often working closely with other multilateral organizations such as the United Nations.

Examples of ROs include, amongst others, the African Union (AU), Association of Southeast Asian Nations (ASEAN), Arab League (AL), Arab Maghreb Union (AMU), Caribbean Community (CARICOM), Council of Europe (CoE), Eurasian Economic Union (EAEU), European Political Community (EPC), European Union (EU), South Asian Association for Regional Cooperation (SAARC), Shanghai Cooperation Organisation, Asian-African Legal Consultative Organization (AALCO), Union for the Mediterranean (UfM), Union of South American Nations (USAN).

The following is a list of countries and territories where English is an official language used in citizen interactions with government officials. As of 2025, there are 58 sovereign states and 28 non-sovereign entities where English is an official language. Many administrative divisions have declared English an official language at the local or regional level.

Most states where English is an official language are former territories of the British Empire. Exceptions include Rwanda and Burundi, which were formerly German and then Belgian colonies; Cameroon, where only part of the country was under the British mandate; and Liberia, the Philippines, the Federated States of Micronesia, the Marshall Islands, and Palau, which were American territories. English is the sole official language of the Commonwealth of Nations and of the Association of Southeast Asian Nations (ASEAN). English is one of the official languages of the United Nations, the European Union, the African Union, the Organisation of Islamic Cooperation, the Caribbean Community, the Union of South American Nations, and many other international organisations.

Regional Integration is a process in which neighboring countries enter into an agreement in order to upgrade cooperation through common institutions and rules. The objectives of the agreement could range from economic to political to environmental, although it has typically taken the form of a political economy initiative where commercial interests are the focus for achieving broader socio-political and security objectives, as defined by national governments. Regional integration has been organized either via supranational institutional structures or through intergovernmental decision-making, or a combination of both.

Past efforts at regional integration have often focused on removing barriers to free trade in the region, increasing the free movement of people, labour, goods, and capital across national borders, reducing the possibility of regional armed conflict (for example, through Confidence and Security-Building Measures), and adopting cohesive regional stances on policy issues, such as the environment, climate change and migration.

The UNASUR Constitutive Treaty, officially the Constitutive Treaty of the Union of South American Nations, was signed on May 23, 2008 during the extraordinary summit of heads of state and government of the Union of South American Nations (UNASUR) held in Brasília, Brazil. It officially established the Union of South American Nations, an intergovernmental continental union of all twelve South American nations.

The Secretariat of Foreign Affairs (Spanish: Secretaría de Relaciones Exteriores, SRE, lit: Secretariat of External Relations) is the government department responsible for Mexico's foreign affairs.

Mexico currently has 80 embassies, 33 consulates-general, 35 consulates, 1 representative office in Ramallah, 1 trade office in Taiwan and 144 honorary consulates around the world. Mexico also has 2 permanent representations to the United Nations in New York City and Geneva, there are also permanent missions to the OAS in Washington, D.C., to UNESCO in Paris, to European Union in Brussels, to OECD in Paris, to ICAO in Montreal and to OPANAL in Mexico City. Mexico also has permanent observer mission status to the AU, CAN, CE, Mercosur, NAM and Unasur. The Secretariat also operates passport offices throughout Mexico where Mexican citizens can apply in person for passports for international travel.