A political revolution is a significant change in political power or organizational structures that occurs when the population revolts against the current authority. This can happen through various means, including protests, uprisings, or armed conflict. The goal is often to replace an existing government or political system with a new one that better reflects the people's desires and needs. Revolutions can be driven by various factors, such as economic hardship, social injustice, or a lack of political representation. Historical examples include the American Revolution, which led to the formation of the United States, and the French Revolution, which resulted in the rise of republicanism in France.