President Lincoln and the Sioux Indian uprising in Minnesota in 1862

[My Name Is Kate]

Why were the refugees from East Prussia unwelcome in western Germany?

For exactly the same reasons many in the north feared the freed slaves to come north: the refugees came with nothing, needed to be fed, needed accomodation, competed on the labor market.

I would hazard to guess that slavery was not nearly as widespread and was abolished sooner in the North, in part because a largely industrial economy didn't provide a ready-made means to house slaves, as the large plantations in the South did.