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PostGerman-Americans in the US Civil War (Luciano Dondero, Italy, 06/20/17 3:13 pm)
Another element to factor is, adding to the thorough list outlined by Eugenio Battaglia in his excellent post of June 20th, was the character of the German immigrant population, which was to play a crucial role during the US Civil War.
Because of their experiences in a fragmented Germany with the rotten nobility, who inflicted hundreds of years of pain on the common people, they were not so keen on slavery and had very little respect for the Southern boors' pretension to be seen as gentry.
JE comments: Many of the German immigrants of the mid-19th century had escaped from the revolutions of 1848, and so were very "liberal" on the political spectrum. Add to this the anti-slavery convictions of the German Evangelical sects.
Among the many impacts of the Germans on the US Civil War, it is said that the German vote/influence in St Louis kept Missouri from seceding from the Union.