Mass production was facilitated by the railroad. factorization. better dies. all of the above

factorization

Explanation:

Mass production is the type of production that takes place on a mass/ massive scale and includes the use of technologies for continuous assemblage and carrying out the process. This process of mass manufacturing or production began in the 18th century as a result of Industrial clustering and opening of railroad systems around the globe. As the production needs to be time-efficient and capital intensive it uses a high proportion of energy like in the phase of pre-industrialization use of machine tools and the labor market was of prime significance. With the industrial phase of production came, the factorial electrification seen in the form of electric motors had the biggest impact on mass production.

The answer is c because the law is facts