I believe the answer is: They worried about having to take part in future wars.
At that time, the united states senates prefer to take the position as a neutral force that want to avoid any intervention toward other countries' problems. This stand is taken away the moment the Japanese army decided to initiate an attack to the pearl harbour.
Answer:
As towns grew wealthier, town dwellers began to resent the lord's feudal rights and his demands for taxes. They felt they no longer needed the lord's protection—or his interference. ... Power gradually shifted from feudal lords to the rising class of merchants and craftspeople.
Explanation: