interesting
you might enjoy this about Magellan
https://www.amazon.com/Over-Edge-World-Terrifying-Circumnavigation/dp/006093638X?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-osx-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=006093638X
Also i am starting 1491 a book about NA before the arrival of Columbus.
I have that book (1491).