To arouse public sympathy for slaughterhouse workers.
Explanation:
This was the main purpose that Upton Sinclair had when writing <em>The Jungle</em>. Sinclair wanted to arouse public sympathy for slaughterhouse workers who were often abused. These workers worked long hours with very little pay. They were often immigrants who felt forced to tolerate bad working conditions. However, the effect the book had was that of shocking the population with the unsanitary descriptions of slaughterhouses.
Keeping in mind the description of the stone point given in the story, we can state Marshall the rancher was looking at a Folsom point.
As it's known, a Folsom is a kind of stone point with a leaf-like shape which has a concave base and wide, shallow grooves/flutes running almost the entire length of the point.
The Dred Scottt case increased sectional tension because he attempted to sue for citizenship, and the decision was that black men could not and would not ever be granted citizenship
