Have you ever worked in a factory?
No I have not, but my uncle did. Factories arose with the introduction of machinery during the Industrial Revolution.
I know that factory work is hard work.  especially back in the Industrial Revolution time
This was an important transition of going from hand production to machine production.
Yes it was and now basically machines can do all the work for us
growth.
Textiles were the dominant industry of the Industrial Revolution in terms of employment, value of output and capital invested. The textile industry was also the first to use modern production methods.
The Industrial Revolution began in Great Britain, and many of the technological innovations were of British origin. By the mid-18th century Britain was the world's leading commercial nation, controlling a global trading empire with colonies in North America and the Caribbean, and with political influence on the Indian subcontinent, particularly Bengal Subah, through the activities
Factory
A factory, manufacturing plant or a production plant is an industrial site, usually consisting of buildings and machinery, or more commonly a complex having several buildings, where workers manufacture goods or operate machines processing one product into another.
Factories arose with the introduction of machinery during the Industrial Revolution when the capital and space requirements became too great for cottage industry or workshops. Early factories that contained small amounts of machinery, such as one or two spinning mules, and fewer than a dozen workers have been called "glorified