How did the issue of slavery affect the Northwest?

There was a minority of northerners called abolitionists who were vocal about ending slavery. Abolitionists believed slavery was morally wrong, some favored a gradual end to slavery, while others wanted to outlaw it all at once

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the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation.