What is back then meaning?

Back then is a phrase used to refer to a past time or era. It usually relates to something that was happening or popular in the past. It can refer to any time in history and is often used when people are reminiscing or comparing current situations to a previous time. The exact timeframe of "back then" can vary and is usually dependent on the speaker's age and personal experiences. It is a general term used to refer to times that have already passed and cannot be relived.