Civil War

https://en.wikipedia.org/wiki/American_Civil_War
https://www.civilwar.org/learn/articles/civil-war-facts
https://www.newyorker.com/news/news-desk/is-america-headed-for-a-new-kind-of-civil-war
http://www.latimes.com/opinion/op-ed/la-oe-walker-second-civil-war-20170820-story.html
http://foreignpolicy.com/2017/10/10/what-a-new-u-s-civil-war-might-look-like/
http://www.chicagotribune.com/news/opinion/commentary/ct-perspec-america-civil-war-liberal-conservative-1103-story.html
http://foreignpolicy.com/2017/06/28/what-are-the-chances-of-a-second-american-civil-war-a-best-defense-update/
https://www.quora.com/Will-there-be-a-second-American-civil-war-If-so-who-would-the-factions-be-and-how-might-it-unfold
https://www.quora.com/What-would-a-second-civil-war-in-the-United-States-look-like-if-it-occurred-today