Answer:
After the Mexican war (1846- 1848), the issue of slavery was reopened. It was discussed whether slavery should be allowed in the new territories in the West. Arguments against allowing slavery include the following:
- Allowing slavery in the new Western states would compromise the balance between the number of states that allowed slavery and those that forbid it.
- White workers would be affected by allowing slavery, as the degradation of white labor would take place.
- The issue of slavery was a part of the struggle for power between North and South. The area which won the slavery discussion would be considered as a winner of this political game.