How far back in time can you understand English? This site goes back by centuries allowing you to test yourself.
(www.deadlanguagesociety.com)
It was a good thread here too: https://lemmy.world/post/43447694
I guess the nature of the fediverse means that some post duplication is necessary for exposure coverage, lol, so who am I to accuse a repost of not suitably linking the source.