The notable event that marked the beginning of the Industrial Revolution in Britain is often cited as the introduction of the steam engine, particularly James Watt's improvements in the late 18th century. This innovation enabled the mechanization of industries, facilitating a shift from agrarian economies to industrialized societies. Additionally, the establishment of factories, advancements in textile manufacturing, and the development of transportation networks such as railroads were pivotal in this transition. The Industrial Revolution initiated profound social, economic, and technological changes that spread beyond Britain, shaping global history and fundamentally altering living and working conditions.