The assembly line greatly increased the efficiency of manufacturing processes and reduced the time required to produce goods, leading to industrial growth in the United States. By breaking down complex tasks into simpler and more repetitive actions, the assembly line allowed workers to specialize in specific tasks, which in turn made it possible to increase production rates and reduce costs. This made mass production of goods more feasible, and as a result, the assembly line played a significant role in the growth of the American economy during the early 20th century.