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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Is there a book where I can get the information from?
<span>c. lack of choice of providers</span>
She provided women with unprecedented access to the President. And also She was the first female Cabinet member She was the Secretary of Labor She led the way in establishing Social Security, and helped win approval of the Fair Labor Standards Act, which ended child labor and established a minimum wage. She served as FDR's representative and advisor. Sorry if it’s not enough
I think it’s C? Yea I think so