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Answer:
That's because the framers wanted the states to continue governing most matters themselves. So, the framers developed federalism. Federalism is a division of power between the federal government and the individual state governments. Federalism is established through the Constitution's Supremacy Clause
Explanation:
The building of railroads made it easier to buy and sell thinned from father distances and for cheaper since you could pay less to send or buy more things via Railroad instead of by horse.
A is the answer
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