The coming of columbus and other europeans to the americas brought many changes to the americas, some of them positive and others negative. what affected the native population of north america most severely?

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)