North was no longer willing to tolerate slavery as being part of the fabric of US society and that the political power brokers in Washington were planning to abolish slavery throughout the Union. Therefore for many people slavery is the key issue to explain the causes of the American Civil War. However, it is not as simple as this and slavery, while a major issue, was not the only issue that pushed American into the ‘Great American Tragedy’.
Answer:

Explanation:
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In this case, we need to keep in mind that performing these types of operations require that the final result was shown with the same significant figures as the initial number with the fewest ones; it means, we show the final result with 3 significant figures, because 3.698 has four and 1.85 has three significant figures; therefore, we obtain:

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The main characteristics of glass are transparency, heat resistance, pressure, and breakage resistance, and chemical resistance.
Answer is: C₄H₈.
C₄H₈ is hydrocarbon, organic compound<span> consisting only of carbon and hydrogen.
CaH</span>₂ (calcium hydride) is alkaline earth hydride, inorganic compound.
H₂O₂(hydrogen peroxide) is pale blue, clear, inorganic <span>liquid.
P</span>₂O₅ (phosphorus pentoxide) is <span>white, crystalline solid inorganic compound.</span>
Nm3R is the correct answer