First it has to be voted on by the house and the senate. Then it goes to the supreme court. Then after the ok by the supreme court it goes to the president to be signed
Many people did not agree with slavery in some states, which caused tension in many areas.
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Nineteenth-century Russian society was rigidly hierarchical, with an established class system that provided the outlines for the social and economic order.
Answer:
"Even today, the need for work is a common reason people move to urban areas."
This sentence, although not inaccurate, is not necessary in order for the rest of the paragraph to be coherent. The sentence states that nowadays, people continue to move for work. However, the passage is not a comparison between the past and the present. It simply wants to inform us of the changes that led to bigger cities. Therefore, you can remove this sentence without seriously altering the author's explanation.