What was the effect of Columbian exchange on society? From perspective of a Native American in 15-16 centuries.

In the end of 15th century, Columbus discovered a new land, one previously unknown to Europeans. That is how it was called – the New World, Americas. Europeans that came had a violent impact that strongly changed Americas and their natives.
The Columbian exchange was the global transfer of foods, plants, animals and diseases between the two worlds. However, since Europeans were the ones who discovered the New World, they were the ones to choose what to transfer. Without regard of natives, who lived there, of course. One of the most disastrous transfers was the transfer of diseases from Old to the New World. In some regions of America over 90% of population died. After that Europeans found out, that the New World is full with different valuable things like new spices, potatoes, tomatoes and much more. However it wasn’t easy to get all the necessary stuff and Europeans didn’t like to work themselves in the hot fields of the New World. Thus they had to use another force. They used slaves from Africa and from natives, which also destroyed a big amount of the left over natives.
So, to summarize Europeans got themselves rich, but at cost of natives and their land. Many of Native Americans were killed and those, who survived lost their culture and were no longer lords of their land.