A. The railroad linked these cities to the rest of the country.
Two things societies with iron technology developed socially are "divisions of labor" and "<span>hierarchical social classes," since these societies were generally more advanced than their counterparts. </span>
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It was stock market "speculation" that contributed the most to the Depression of 1920-21, since the value of many companies became incredibly inflated.
They make a government by the social contract to protect rights that they even had in their state. But remember it was only to protect their rights. But unfortunately they had to break it.