Why did northern workers oppose the abolition of slavery?

Hi Brainiac

Because they believed that feed slaves would be willing to take lower wages in order to get work in North.

Sorry for the late answer, but I hope its help:)

what are two things that greatly the american economy after the war? the huge buildup of u.s. military the beginning of the korean conflict the creation of the gi bill the marshall plan for nations

they consider la nina a warm place and el nino a cool place but all aoround its pretty neatrual