How did European exploration and colonization forever change the landscape and lives of people in the Old World and the New World?

For one thing it changed alot.Because the more they traded the more they had dieaseses come over but it really was a good thing because people were able to get even more healther than what they ever could have been, and plus more and more people are eating everyday and it's helping them out alot. But as far as the landscaping goes there may be to many diesaes there but there all alright. And it really changed alot for the natives cause they were able to eat more but they also caught majority of the diseases and were killed on by one.