Respuesta :
During the gilded age
Explanation:
In 1870 and 1880, both the economy as a whole and wages, wealth, national product and capital in the United States grew at the fastest pace in the history of the country. As the industry grew, methods of mass production evolved. The Gilded Age of the second half of the XIX century became the epoch of magnates. The economy quickly evolved, and corporate incomes grew rapidly as well.
The system of mass production in manufacturing developed rapidly after the industrial revolution during the gilded age.
What is Gilded Age?
The Gilded Age serves as the time between the Civil War and World War I , in which the United States experienced high population and good economy .
Therefore, during this age, there was a system of mass production in the manufacturing industry
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