What are some good effects of the Spanish-American War?
antonio is correct. additionally, it did help the men of the north and southern US to unite behind a common cause – the war bred a camaraderie and the grudges of the Civil War really began to fade with the S-A War. If you are an ultra-conservative, you might also see a few other things as potentially good: the war scuttled an early effort to resolve international conflict by arbitration, it set back the women’s suffrage movement, it served as a precursor/test-run for widespread US adventurism/occupation overseas, and it is a textbook example of the news media the right wing would love to see: only the pro-war propaganda reached the public.