<span>Before 1830 - The South defended slavery as a necessary evil. They argued that the emergence of cotton as the most important cash crop in the country made slaves necessary. Instead of defending slavery as a necessary evil, they began to defend slavery as a "positive good."</span>
Answer: silk road
Explanation: The silk road was very helpful because that was where they got all their resources from
It is hard to say without looking at your source (textbook or article if you have one associated with this question) but in the most recent studies, it has been Islam.
The answer for this question is 34 you can subtract 52-18