"...this has remained perhaps the most tenacious myth surrounding the Civil War’s onset, and one that blatantly ignores the decidedly divisive role of slavery in mid-century American politics and society. Accordingly, the sesquicentennial of the Civil War has witnessed a slew of ahistorical tariff-centered explanations for the conflict’s causation, articles like “Protective Tariffs: The Primary Cause of the Civil War,” which appeared in Forbes Magazine in June 2013. Although the article was quickly pulled from the Forbes website following a rapid response from historians on Twitter (#twitterstorians), this particular piece of tariff fiction still exists on the author’s website as well as in a local Virginia newspaper, the Daily Progress."
https://imperialglobalexeter.com/2015/03/02/debunking-the-civil-war-tariff-myth/