Answer:
Railroads used the iron to build railroad tracks but iron was weak and also dangerous. Soon people then realized that steel was a better material for tracks because it was able to hold more weight which then allowed heavier cargo. Railroads also transported mineral needed to forge steel.
Explanation:
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be "supply and demand", since this dictates what is bought and sold and at what rates.</span></span>
Answer
Tanks, machine guns and poison gas
Explanation:
I think the answer is President Monroe
A similarity between the separation of powers, the system of checks and balances, and federalism is that they all are meant to keep the federal government from becoming too powerful and tyrannical.