How did the growth of the rail networks affect the meatpacking industry?
the meatpacking industry shrank because the demand for other natural resources increased.
the meatpacking industry grew because the cattle population increased.
the meatpacking industry grew because railroads were used to deliver large quantities of meat to processing plants in
major cities.
the meatpacking industry shrank because there was no safe way to transport meat on rail cars.

The correct answer is The meatpacking industry grew because railroads were used to deliver large quantities of meat to processing plants in  major cities.

Because it helped the industry.

The meatpacking industry grew because railroads were used to deliver large quantities of meat to processing plants in  major cities.

Explanation:

Before the development of the railroads, bringing meat to the consumers was only possible by driving the cattle to packaging plants found close to major cities.

The westward expansion of the railroad system reduced cattle drives, and new rail centers were quickly settled.

The invention of refrigerated rail cars, in addition to the expanding rail system, signaled the start of a new era.

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the anwser is a) to prevent military conflict