The growth of railroads during the nineteenth century affected U. S. businesses by- * ​

Explanation:

being able to transfer goods at amazing rates

Explanation:

The growth of railroads during the 19th century (1800-1899) impacted small businesses in the middle of the US because they were able to move their business to an area they knew would be booming because of the amount of people that would move there during the Gold Rush.

the roman army grew in size and became dominant in the mediterranean region.

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