Complex sentence: In 1732 Lewis Paul and John Wyatt invented roller spinning--the "one novel idea of the first importance" in the development of the mechanised cotton industry--and in 1741 they opened the world's first cotton mill in Birmingham's Upper Priory.
Split into simpler sentences: In 1732 Lewis Paul and John Wyatt invented roller spinning--the "one novel idea of the first importance" in the development of the mechanised cotton industry. In 1741 they opened the world's first cotton mill in Birmingham's Upper Priory.