Its would be A , I had this question before .
<span>During the early nineteenth century, sectional tensions mounted. New Englanders expressed increasing anxiety over the growing prominence of the western states and the policies of the Jefferson and Madison administrations regarding the Napoleonic conflict in Europe. Slow population growth owing to westward migration and an insecure economy dependent on international trade left New England vulnerable. In a pattern evident in future decades, perceptions of declining fortunes exacerbated sectionalism. Throughout American history, sectionalism seemed most significant in those sections that felt threatened, exploited, or oppressed. Sectionalism in the United States was primarily a defensive rather than an offensive stance. It was a raw nerve in the American identity; when irritated, it was felt sharply.</span>
Answer: Water-borne disease
Explanation: The rivers are mostly populated by sewage waste, industrial waste, and agricultural run-off. So the answer is d.
There are many moral standings and ideals that existed in the last that are completely at odds with what we think today. Or there were ideas on face and science that are just completely strange in comparison with today's ideas. Primary resources don't show a complete picture, because there are always gaps that need to be filled along the way. For example, a lot of primary sources and writing for Viking cultures were written by Christian writers, so it doesn't offered a clear perspective on the pagan side.
