The USA developed the more powerful H-Bomb because it would be more powerful than the atomic bomb and it wold give the USA advantage over Russia and their nuclear bombs.
Because like king, some people believed that the war only brought negative things for the country, such as poverty , death, and economic instability.
Meanwhile, some people believe that they're doing the war for the right cause (i.e : destroying communism and other cruelties) , so they chose to oppose king
Aesop's lifetime falls in B.C., or as it is more commonly known today, B.C.E.