In what way did the nation's growing transportation system help promote economic growth?(1 point) Responses It made it easier for Native Americans and freed African Americans to obtain the same goods as white people, boosting demand. It made it easier for Native Americans and freed African Americans to obtain the same goods as white people, boosting demand. Because it added costs for the delivery of goods, it made more profits for the manufacturers. Because it added costs for the delivery of goods, it made more profits for the manufacturers. It opened up national markets for selling and obtaining resources and helped lower costs of production. It opened up national markets for selling and obtaining resources and helped lower costs of production. Railroad rebates and pools brought down prices for small farmers, who could then afford to modernize their equipment.

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All of the above responses are correct in explaining how the nation's growing transportation system helped promote economic growth. By making it easier to transport goods, opening up national markets, lowering production costs, and making goods more affordable for small farmers, the transportation system facilitated economic growth by increasing trade and access to resources.