Political unification refers to the process of merging separate political entities into a single, cohesive unit. This can occur through various means, such as treaties, wars, or voluntary agreements. The goal is often to create a stronger, more stable government that can effectively manage resources and address the needs of its citizens. Historically, political unification has played a significant role in shaping nations. Examples include the unification of Germany in the 19th century and the formation of the United States through the adoption of a federal system. Such unifications can lead to increased economic cooperation and enhanced security among the newly formed entity.