Answer:
The automobile
Step-by-step explanation:
The automobile became the greatest invention that allowed people to travel individually in 1900. Henry Ford was the first to produce cars. All was possible because of the mass production. The production of automobiles occurs after the installation of the assembly line. The assembly lines provide mechanics and machines to complete specific tasks as assigned. Assembly lines also helped in reducing the prices of the cars by $300. Earlier cars were expensive at $850, where people bought cars, which was higher than the ordinary man salary.