A coalition is a group formed by multiple parties or organizations that come together to achieve a common goal. This collaboration can occur in various contexts, such as politics, where different political parties unite to form a government, or in social movements, where various groups work together to advocate for a cause. Coalitions can enhance the effectiveness of their members by pooling resources, sharing expertise, and increasing their influence. For example, in international relations, countries may form a coalition to address global issues like climate change or security threats, allowing them to tackle challenges more effectively than they could alone.