Well in the 1850's was a significant time where slavery occurs. As you probably know slavery was terrible on so many levels. Becuase of the different opinions on slavery their political values changed., Some values thought that slavery was okay while the other fought against it saying that slavery should end. Different sections such as Indiana and Illinois has strong opinions to keep slavery including the south when the rest of America did not feel so strongly.
John F. Kennedy believe that no matter others will do to them they will keep going no matter if "well or ill, that we shall pay any price, bear any burden" they will keep moving forward. If Americans United they will make a difference and be stronger but if they are separated they can not improve as what they wished for. He believe on "defending freedom" That everyone can make a change for their country.
The octopus, England, is spreading it's arms to gain control over all countries