OED: "war between the citizens or inhabitants of a single country, state, or community". Early use of the term in reference to neither the Roman Republic nor the English Civil War include the War in the Vendée (1802) and the civil war in Portugal ( 1835, 1836).
Milner-Gulland, R. R.; Dejevsky, Nikolai J. (1989). Atlas of Russia and the Soviet Union. Phaidon atlases of world civilizations. Phaidon. p. 108. ISBN9780714825496. Retrieved 2014-02-11. 1774 [...] the civil war against Pugachov reached its climax.
Armitage, David. Every Great Revolution Is a Civil WarArchived 2013-12-03 at the Wayback Machine. In: Keith Michael Baker and Dan Edelstein (eds.). Scripting Revolution: A Historical Approach to the Comparative Study of Revolutions. Stanford: Stanford University Press, 2015. According to Armitage, "The renaming can happen relatively quickly: for example, the transatlantic conflict of the 1770s that many contemporaries[who?] saw as a British "civil war" or even "the American Civil War" was first called "the American Revolution" in 1776 by the chief justice of South Carolina, William Henry Drayton."
Armitage, David. Every Great Revolution Is a Civil WarArchived 2013-12-03 at the Wayback Machine. In: Keith Michael Baker and Dan Edelstein (eds.). Scripting Revolution: A Historical Approach to the Comparative Study of Revolutions. Stanford: Stanford University Press, 2015. According to Armitage, "The renaming can happen relatively quickly: for example, the transatlantic conflict of the 1770s that many contemporaries[who?] saw as a British "civil war" or even "the American Civil War" was first called "the American Revolution" in 1776 by the chief justice of South Carolina, William Henry Drayton."