Slaves were used in the North for different purpose. In the North, slave labor helped to provide the food necessary to feed the Union army is a false statement.
In the north, plantation slavery were used in each colony, where they cultivate staple crop colonists chose to cultivate.
In the war, African Americans were used for military purposes. in the South, they were used as enslaved labor and in the north, they were used as wage labor and military volunteers.
The North did not support slavery in full . They oppose slavery was based on political and anti-south sentiment, economic factors, etc.
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