The Solow-Swan Model is an economic theory that explains long-term economic growth through capital accumulation, labor or population growth, and technological progress. It emphasizes how these factors contribute to increases in a country's output over time, suggesting that higher savings rates can lead to more capital and, consequently, greater production. A key feature of the model is the concept of a steady state, where the economy grows at a constant rate. In this state, capital per worker remains constant, and any growth in output is driven by technological advancements rather than increases in capital or labor alone.