Hi there, I hope you're having a great day!
The answer you may be looking for is: Prince Henry explored somewhere in-between 1394-1460 A.D. (the year he was born and the year he died). Specific dates are unknown but historians can only indicate his birth and death date so that is my best guess.
I hope this helped you, it took me a while to figure this out so if you can give me brainliest as a 'thank you' I would really appreciate it and you!!
Have a brainly day!!
-Austin <3
