Could you give a clear example from history? Usually it isn’t clear. For example, historians are still not in agreement about when the Roman empire ended [1].

Could you give a clear example from history? Usually it isn’t clear. For example, historians are still not in agreement about when the Roman empire ended [1]. [1]: https://www.thoughtco.com/fall-of-rome-short-timeline-121196 https://www.thoughtco.com/fall-of-rome-short-timeline-121196