What country would be most likely to join an intergovernmental organization?

Countries with stable political systems, strong economies, and a commitment to international cooperation are most likely to join intergovernmental organizations. For instance, nations in the European Union, like Sweden or Denmark, often participate in various intergovernmental organizations due to their established diplomatic frameworks and shared interests. Additionally, emerging economies with aspirations for global influence, such as Brazil or India, may also seek membership to enhance their international standing and collaborate on global issues.