The answer is 'Railroads'
The Industrial Revolution in England lead to the development of trains and fast travel.
The United States quickly adopted the technology and brought in English businessmen and engineers to develop railroads in it's sprawling western states.
Railroads were integral in the early years in to cement newly acquired states under the control of the Federal government.
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Answer:
Sam Houston was the chief Southern Unionist in Texas. Houston dismissed the activities of the Texas Withdrawal Show, trusting it had exceeded its authority in turning into a part condition of the recently shaped Alliance. He would not make a vow of devotion to the Alliance and was ousted from office.
I believe your answer would be C! Hope this helps =]
Economic activities nations also have similar