Which factor aided the building of transcontinental railroads? * O The Supreme Court approved public ownership of the railroad industry.
The federal government provided free land to the railroad companies.
Congress repealed antitrust laws against the railroads.
O
The railroads established fair rates for customers.

The railroads established fair rates for customers.

Explanation:

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.

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