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 ==Slavery at the North== 
 the use of slave labor was important in the developement of the infrastructure in the so-called ""Free States."" Whatever can this be thinking of? The North had abolished slavery (immediately or gradually) by 1808 because it had no economic importance there; the infrastructure was still dirt roads by then.  8 July 2005 17:56 (UTC) 

 (All Northern states abolished slavery. Some declared that all slaves born after a certain date would be free, so slavery took some time to die out.) "