Answer:
b
Explanation:
because the dynasties. over 250 years of peacw
They created the united nations so that they can arrange things so that another war doesnt start I believe but its the united nations
Steel was important to industrial growth after the civil war because it was used to make steel rails for railroads. <span>n the years between the </span>American Civil War<span> and the end of the nineteenth century the modern U.S. industrial economy developed on the backbone of a good transportation infrastructure mainly railroads that were developed from steel.</span><span>
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