"Chivalric Code" <span>was a code of behavior romanticized by medieval poets, since this was the going "code" of honor and conduct for knights of the era. </span>
Perhaps the greatest societal change that took place between these two periods was WWII--meaning that after the war in the 50s, America was more likely to ask itself the tough questions regarding race and the role of women, since blacks and women had worked so hard to help the US during the war.
To create a unified government for the thirteen colonies.