They wrote about slavery from the standpoint of the Bible (Barnes opposed slavery, while Thornwell, a Southerner, supported it).
I think the answer is laid out in the question. When you live in a desert you are going to encounter many "Droughts", which are natural disasters..<span />
<span>The biggest change was the passing of the Civil Rights act, which led to trouble of segregation and such among the states. Also the idea of making education available to everybody also bloomed during this time.</span>
Imperialism necessitates control of territories, while rivalry for resources just means control of those resources.
D. American Indians protesting the influx of immigrants