An assembly line is a manufacturing process in which individual parts are added in a sequential manner to create a finished product. This method allows for efficient mass production, as each worker or machine performs a specific task, reducing the time and effort needed to assemble complex items. The concept was popularized by Henry Ford in the early 20th century, revolutionizing the automotive industry. Assembly lines are designed to optimize workflow and minimize waste, making them essential in various industries beyond automotive, including electronics and consumer goods. By breaking down the production process into smaller, manageable tasks, companies can increase output and maintain consistent quality.