I think many will think about a historic event or era when they first read this question, but if given enough thought, I am sure we all have something in our past we would like to chance.
I lived right down The road from you in Ypsilanti. Then Belleville, then Canton. Although I wasn’t born until 1960. I did work at Metropolitan Airport in Romulus for 17 years before transferring to Raleigh, North Carolina. So I spent a lot of time in the Romulan Empire.