Answer:
I think its A) valued cultural sophistication.
Explanation:
This resource might be helpful to you: http://www.adl.org/assets/pdf/education-outreach/Brief-History-on-Anti-Semitism-A.pdf
Anyways, antisemitism originates most popularly from Christianity, and an abhorrence its followers had (and some still have) towards their rival Judaism.
Uncle Sam wasn't actually a real person. But, he is<span> a common national personification of the American government or the United States in general that, according to legend, came into use during the War of 1812. I don't think "Uncle Sam" would appreciate it though.</span>