Answer:
3.1 because you round the numbers to the nearest .1 spot if its .5 or above then it goes to the next whole number
Explanation:
I would say that the sectional tensions strengthened during the 1850s mostly because of slavery. As you already know, historically, the North and the South of US were very different. The North went out of its way to abolish slavery, whereas the South was pro-slavery. This is what created many tensions, and later on, even more wars between these two sections.
