How did James Hargreaves become famous?

James Hargreaves became famous for inventing the spinning jenny in the 1760s, a revolutionary multi-spindle spinning frame that significantly increased the efficiency of yarn production. His invention played a crucial role in the Industrial Revolution by enabling textile manufacturers to produce more thread with less labor. Hargreaves' innovation transformed the textile industry and contributed to the shift from manual to mechanized production methods, establishing him as a key figure in industrial history.