Henry Ford made many important contributions to the auto industry. Which of the following was not one of his innovations?

Henry Ford was the first person to develop the system of the assembly line. The assembly line cranked out cars faster because one worker was only responsible to put together one part, not a whole car. This also dropped the prices of the cars and made them affordable to the average American.

An innovation that was not his would be that he guaranteed his workers five dollars a day for work.