The contact between the Native Americans and the Europeans brought about the

Explanation:

It brought about large epidemics that decimated the populations of Native Americans. The natives were not immune to many diseases that the Europeans brought with them on boats. Among the new diseases was smallpox. It was very deadly for the natives and resulted in very high numbers of deaths in the local population.

i believe the answer would be 1.

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)