Final answer:
Henry Ford and Ransom E. Olds are credited with developing the moving assembly line, which revolutionized the efficiency and cost of manufacturing automobiles.
Step-by-step explanation:
Henry Ford and Ransom E. Olds are credited with the development of the moving assembly line. While Ransom E. Olds demonstrated that the assembly line could work for automotive production, it was Henry Ford who perfected the technique within the Ford Motor Company. Ford's innovative use of heavy steel rails and conveyor belts moved a car's chassis down the line, enabling workers to perform specific tasks in one place as the car moved along. This significantly increased efficiency and reduced the cost of manufacturing automobiles, making them more affordable and accessible to the average American.