What industry did the refrigerated railcar impact the  most?

Meatpacking Industry

Explanation:

The industry that refrigerated rail car impacted the most was Food industry. To be even more specific the meatpacking industry was benefited the most. The industry grew because back then railroads were the primary mode of transportation and were extensively used for delivery of large quantities of meat from processing plants to places all across the country.

Refrigerated rail cars were built in 1857. They were designed with holding areas for ice. The ice blocks were loaded through ports in the roof of a car. Refrigerated cars were twice the cost of traditional rail cars. But on the other hand they allowed food to be transported to the greater distances and to stay fresh longer.

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