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.

Railroad rebates and pools brought down prices for small farmers, who could then afford to modernize their equipment.
Railroad rebates and pools brought down prices for small farmers, who could then afford to modernize their equipment.

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.