Aus and NZ, too. And see what happens.
Because it's too exhausting to explain that it's not a discovery if you don't share that knowledge with the rest of the world and just keep it secret to you and yours. But they DO think globalization is great, so ...
'Diversification' would work too.
And don't forget to remind them: It took over a hundred years to push the natives into those reservations. Just because the new arrivals aren't chasing you out of your home today, doesn't mean their grandchildren won't be doing so in 60 years time.
It didn't happen overnight, but the course was set from the start. And it is set right now. Without any change to that course, the same thing is gonna happen.