Hello !
I think the answer would be...
The last option, "The Nation has to go through significant changes to avoid such tragic wars in the future."
I hope I was able to help you out ! :DD
<span>At the State of the Union Address in 1941, John F. Kennedy singles out Europe, Asia, Africa and Australasia that United States of America will defend against any attacker. He mentioned that the total of the whole population and resources for all the countries is greater than the whole of the Western Hemisphere. </span>
The anwser to your question is -ible