a common pattern that follows human spread is called "broad spectrum revolution". Often they'll make it to a new place, feed off the present megafauna until the

a common pattern that follows human spread is called "broad spectrum revolution". Often they'll make it to a new place, feed off the present megafauna until they, oftentimes, run it to extinction, and then are forced into a BSR and we see the development of more complex landscape management techniques, hunting of much smaller game, technologies like pickling/preserving, domestication of more plant species, etc. Cultures too are subject to this form of evolution. You often see cultures very explicitly dedicated to the protection of caretaking of their environments where there are traces of extinct megafauna. The peoples of the NE woodlands of North America for example had their entire tribal identities centered around certain animals they were in charge of protecting (while still hunting and living off them)