Superhighway!
The Dig
00:00
On Trails and Exploration
Before humans ever arrive in North America, it's a continent of animals moving across the landscape. Over time, as they move across this landscape, they're creating paths. And they're sharing those paths with one another. So when the first humans arrive in North American, it's only natural that they will follow those paths as well. This very vast trail network starts to expand across the continent.
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