Which was one factor that contributed significantly to kennedys victory in the election of 1960? a)his large familyb)his religionc)his choice of a running mate

B) His religion.

Explanation:

Kennedy was a Roman Catholic, and, since no Catholic had ever won the  Presidential election before, his capacity to prioritize national interests over the Vatican´s agenda was doubted, as well as his electability in the Bible Belt South. Despite his statements about the importance of separating church and state, his religion may have cost him an around 1.5 million votes in that election. Nevertheless, he won the Presidency.  

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.