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

In many ways european explorations and colonizations have forever changed the new and old world. One way that they changed it was the way the new and old world trade goods, people, and livestock. For a long time The old world knew nothing about the New world, they thought that the United States (or americas as they would say) diddn't even exist. They only traveled on land to trade goods but after the Exploration to the new world they found another way to trade. By sea. Also by exploring to another country they found new things to plant and share with the old world so that they can more things to eat and to share with the old world. other than food they also found new land that they could settle on so that britian could spread out far from britian. We also learned new ways of traveling , hunting, planting, and building.