Answer :
Final answer:
The refrigerator car was crucial in revolutionizing the meat industry by enabling efficient distribution of meat products.
Explanation:
The invention that was most important in revolutionizing the meat industry was the refrigerator car. This invention, which allowed for the transportation of meat over long distances while being refrigerated, transformed the meat industry by enabling the efficient distribution of meat products.
Philip Armour and Gustavus Swift utilized refrigerator cars to establish massive processing facilities and ship meat in a more cost-effective and efficient manner, ultimately reducing shipping costs and altering the American diet.
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