Civil War/ Vietnam War - Duplicate Courses at Study.com?

[Silly_Me]

Hey, guys.  Do you happen to know if the following courses duplicate at Excelsior College?  I have already taken the lower-level courses, but I'd love to get additional upper-level credits by taking the other two courses.  


History 106: The Civil War and Reconstruction
History 306: The American Civil War Era

History 108: History of the Vietnam War
History 308: Causes and Effects of the Vietnam War


Thanks for the help!