Some examples of regional integration treaties include the Association of Southeast Asian Nations treaty, the European Union, the North American Free Trade Agreement and the Organization of Petroleum Exporting Countries.
Some regional integration treaties, such as the European Union, create a common currency, and this leads to fiscal crises. With regional integration, individual countries are not able to control the supply of their currency to meet their economic conditions. When a more powerful entity controls that currency, such as the euro, individual countries give up the power to control their currency, and this weakens their economy.