The national woman suffrage association (nwsa) argued that

 The correct answer is :  that they would guarantee women the right to vote.

Explanation:  The NWSA is a United States organization created in 1869 by Susan Anthony and Elizabeth Cady and its headquarters were in New York, composed only of women, men could join but not hold any position within the organization. The association also got involved in other women's rights such as not being discriminated against at work and getting better pay, and the laws of marriage and divorce were also reformed.

here are some events that to cause increased conflict between the north and south

1) mexican cession- gaining modern day california, utah, arizona, and new mexico from mexico. caused southern and northern politicians to fight over whether or not there would be slavery in these newly acquired territories.

2) uncle tom's cabin- this famous book described the cruelty of slavery in the south during the antebellum period, causing more northerners to support abolition and southerners to resent the book as they felt it unfairly depicted southern society.

3) kansas- nebraska act- disagreements over whether or not kansas and nebraska would be free or slave states caused issues between northern and southern politicians in congress.

4) bleeding kansas- this fighting took place in kansas after congress allowed this territory to vote on whether or not they would have slavery. citizens were killed and buildings were destroyed during this fighting.