Answer:
The innovation of water frame and the spinning jenny
Step-by-step explanation:
The innovation that led to the development of factories in Manchester was the innovation of the water frame and the spinning Jenny by Richard Arkwright.
This invention was initially made by James Hargreaves and Oswaldtwistle in 1764, but later worked upon and improved by Richard Arkwright.
Following the destruction of his factory in 1780, he later moved to the city of Manchester to build a new factory of 600 working laborers capacity.