Downfall, or collapse, refers to a significant failure or breakdown of a system, organization, or entity. This can occur in various contexts, such as economics, politics, or social structures. For example, the Roman Empire experienced a downfall due to a combination of internal strife, economic troubles, and external pressures. In nature, a collapse can also describe the sudden failure of ecosystems or species populations. Factors like climate change, habitat destruction, and pollution can lead to these collapses. Understanding the causes and consequences of downfall is crucial for preventing similar events in the future.