The US was for a time a mighty powerhouse of freedom, and liberty. A vast majority of the population came from Christian or Jewish ancestry, from Europe, and wanted to stay free or at least give it a good try. And above all, worshiped our Creator.
Most did not believe in Socialism as that involved theft from a group or individual and still does. People believed in caring for one another and would talk to strangers as friends and help them as well. People were open, honest, dependable, and caring. Their word was their bond. The had respect for one another and America prospered as a result.
So what were the primary reasons for the change?