Your this map is better than the Persian Empire one (◍•ᴗ•◍)❤
The Persian Empire one
i beat in 7 secs.
I find it very impressive that the Incas managed to hold an empire of this size, without horses/other animal transport (besides llamas which cannot carry a human being). I remember reading about the series of runners used to relay information, spaced within just kilometres of one another, allowing for a surprisingly effective means of communication.
I've seen people dismiss the Incans due to how recent their civilization peaked (I think there is a misconception that Machu Picchu is much more ancient than it really is, for example), but I'll always have a great respect for the society they built, using what was avaliable to them.
(Same with the Aztecs, although I think they had a writing system)
Thanks for this very nice work!