What religions were in America around the 1920's?

Answer 1

In the early part of the 20th Century, Protestant Christianity was the dominant religion in the United States. Roman Catholicism was also present, particularly in urban areas and parts of the country that had been settled by Roman Catholic immigrants. Jewish communities were thriving, particularly in cities on the Eastern seaboard.

Many other religions were present but not influential outside specific ethnic communities, and unfortunately there was strong prejudice against what Protestant Christians regarded as "pagan" traditions.

Answer 2

All of them. The religions have been around for 100s and 100s of years.

Answer 3

The same religions that we have today.