I don't think there will be a civil war in the USA, at least not for a long time. There is not such a sharp political geographic divide as there was during the civil war, due to the presence of large leftist cities all over the nation. Also, a very large percentage of people everywhere (no matter their political affiliation) are dependent, in whole or part, on money from the federal government (SS, medicare, medicaid, welfare, plus grants to states from the federal government).
I suspect we will just see a continued moral slide in the USA, of which the Right is certainly not immune. More corruption, possibly more crime. More hatred of neighbors, more birthrate and marriage collapse. A lot more racial hatred (of everyone by everyone). More divorce. The continued collapse and degradation of the churches. This may not correspond with economic poverty, at least in the immediate future.
I hope I am wrong.