The expansion of the railroad industry after the civil war led to increased demand for

 Railroads helped strengthen the steel industry by increasing demand which increased factories and increased steel production.

Explanation:

one of the major compromises in the constitutional convention was between the small states and big states. the small states wanted each state to have the same number of representatives in congress. the big states wanted representation based on population.

- "it was a failure that was an embarrassment for the kennedy administration."

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