Nope. It's easy to bullshit your way claiming everything belongs to you when you keep no records, don't have an alphabet and only have "oral traditions". It's like fishing stories, the bullshit gets bigger every time you tell it. Natives were happy to trade with settlers. For mere critter skins they could get magic technology: muskets, axe heads, metal knives, plow, etc. And the most magical of all: glass beads. Get enough of those shiny things, and that would get you laid. Just like today, but the shiny thing are more expensive.