<human>:  When did the Industrial Revolution start in the United States?
<bot>: The Industrial Revolution in the United States started in the 1820s and lasted until 1850. It was a period of rapid technological advancement, marked by the introduction of new inventions such as the steam engine, the cotton gin, the spinning jenny, the locomotive, and the railroad. It was also a period of economic growth, and a transition from an agrarian to an industrial society.