Steam power is a technology that uses steam to generate energy. It works by heating water in a boiler until it turns into steam, which then expands and pushes against a piston or turbine. This movement can be used to drive machinery, generate electricity, or propel vehicles like trains and ships. The invention of the steam engine in the 18th century marked a significant advancement in industrial technology. Pioneers like James Watt improved steam engines, making them more efficient and practical for widespread use. This innovation played a crucial role in the Industrial Revolution, transforming industries and transportation.