The Industrial Revolution consisted of major economic, technological, and social changes that began in the late 18th century in Britain and spread throughout Europe and North America. Key factors that drove the Industrial Revolution included the Agricultural Revolution, which increased food supply and allowed more people to move to cities to work in factories; demographic changes including decreasing death rates and increasing populations; and new ideas of economic liberalism. The First Industrial Revolution saw the development of factories powered by steam engines and the rise of industries like textiles and iron production. The Second Industrial Revolution began around 1870 and featured new energy sources like electricity and oil, as well as new industries like steel and chemicals. The Industrial Revolution transformed societies from rural and agriculture-based to urban and industry