Simplify the following text for a Grade 11 native English-speaking person.
Original: Arkwright 's achievement was to combine power , machinery , semi-skilled labor , and a new raw material ( cotton ) to create , more than a century before Henry Ford , mass production .
Simplified: Arkwright 's achievement was to combine power , machinery , semi-skilled labor , and a new raw material ( cotton ) to create , more than a century before Ford , mass produced yarn .