Today I learned on Nostr: TIL that in the late 18th/early 19th centuries, an explorer traveled over 90,000 ...

TIL that in the late 18th/early 19th centuries, an explorer traveled over 90,000 kilometres (56,000 mi) across North America, and mapped 4.9 million square kilometres (1.9 million square miles) of the continent.

https://en.wikipedia.org/wiki/David_Thompson_(explorer)
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1fds8nc/til_that_in_the_late_18thearly_19th_centuries_an/