Why was it important for the union to keep the border states out of the confederacy?

All of these states had strong support for both the Confederacy and the Union. Why were they important? Keeping control of the border states played an important role in the victory for the Union. These states gave the Union the advantage in troops, factories, and money.

Explanation:

well first we can compare on what the slave masters ate and what the slaves ate well the masters ate fancy great food like chicken rice mash potatose and stuff like that and slaves ate well food that your not suppost to eat like the weird parts of turkey and chicken and slaves master chilled beat and eat and slaves work get beat and get little of sleep there you go