A coalition government is formed when multiple political parties collaborate to achieve a majority in a parliamentary system, typically arising when no single party wins enough seats. Coalition governments often aim to create stability and effective governance by pooling resources and negotiating policies. They can address diverse interests and represent a broader range of constituents than a single-party government. However, coalition agreements can entail compromises, which may lead to tensions among parties and challenges in implementing cohesive policy agendas, often necessitating ongoing negotiation and communication to maintain unity.